SUPPLEMENTARY INFORMATION
|
|
- Gordon Franklin
- 5 years ago
- Views:
Transcription
1 SUPPLEENTARY INFORATION DOI: 1.138/NAT3459 agnetic nano-oscillator driven by pure spin current Vladislav E. Demidov 1*, Sergei Urazhdin, Henning Ulrichs 1, Vasyl Tiberevich 3, Andrei Slavin 3, Dietmar Baither 4, Guido Schmitz 4 & Sergej O. Demoritov 1 1 Institute for Applied Physics and Center for Nonlinear Science, University of uenster, uenster, Germany Department of Physics, Emory University, Atlanta, GA 33, USA 3 Department of Physics, Oaland University, Rochester, I 4839, USA 4 Institute of aterial Physics, University of uenster, uenster, Germany * demidov@uni-muenster.de Conditions for the onset of spin current-driven auto-oscillation in a multimode system. To get a qualitative insight into the effects of spin current on the spin wave dynamics, consider the Landau-Lifshitz-Gilbert equation with an additional Slonczewsi term [1,] describing the torque erted on the magnetization by the spin current [3,4]: d d σi = γ Heff + α G + [ ] dt dt s. (1) Here, =, γ is the gyromagnetic ratio, α G is the Gilbert damping constant, H eff is the sum of the ternal static magnetic field H and the effective fields caused by the interactions within the spin system of the ferromagnet, s is a unit vector in the direction of the polarization of spin current created by the electric current I, and σ is a coefficient describing the efficiency of the spin current generation by the spin Hall effect (see [5,6] for details). To analyze the dynamical processes, we press the magnetization as the sum of the static and NATURE ATERIALS acmillan Publishers Limited. All rights reserved.
2 SUPPLEENTARY INFORATION DOI: 1.138/NAT3439 ~ the dynamic parts: = zˆ+ m = zˆ+ m xˆ + m y. ˆ The dynamic part of the magnetization z z x y vector m ~ describing all the cited dynamical modes is perpendicular to the static part z. ˆ z Since the total length of the magnetization vector is conserved, = + ( m ). ~ z By substituting the pression for the total magnetization into Eq. (1), one obtains the equation for its dynamic component m ~. The first term in Eq. (1) determines the frequencies of the modes, whereas the second (Gilbert) term determines their damping. Since the Gilbert term plicitly contains the time derivative d/dt, the corresponding damping rate is proportional to the mode frequency ω ( = α G ω). If s is parallel to the z-axis, which is the case σi ~ in our periments, the third term in Eq. (1) can be simplified to z m (see Eqs. (9) and (1) in [6]). It has the same form as viscous friction, and therefore also contributes to the damping. However, in contrast to usual systems where the viscous coefficient has a well defined sign to guarantee the stability of the ground state, here its sign can be reversed by changing the sign of the electric current I. For the appropriate sign of I, the term causes an effective negative damping z = σ I, which counteracts the natural Gilbert damping and amplifies the dynamic magnetization. Note that, since the spin current term does not contain spatial or temporal derivatives of the magnetization, the contribution of the negative damping is independent of the frequency and the wave vector of the dynamic modes. The frequency separation between the dynamic modes of a magnetic system generally increases with increasing size of the system. For a magnetic film with a relatively large area, such that the separation between the modes is smaller than their linewidth, single-mode approximation for auto oscillation induced by spin current is inadequate. In this case, the interaction between modes has a qualitative effect on the current-induced phenomena, as shown by the following analysis. NATURE ATERIALS 1 acmillan Publishers Limited. All rights reserved.
3 DOI: 1.138/NAT3459 SUPPLEENTARY INFORATION Below the auto-oscillation onset, thermal fluctuations of each mode are enhanced by the spin torque produced by the spin current. Introducing the dimensionless amplitude ~ = / c m for a spin-wave mode with a given wave vector, and the corresponding dimensionless power p = c, the total dimensionless power in all the modes is = p p. current As the total power is increased, the effective negative damping induced by the spin z = σi = σi(1 p) () is decreased, thus increasing the auto-oscillation onset current. To determine the dependence of the total power on spin current, we start with the effect of spin torque on the individual mode characterized by the wavevector where p = η (3) = (4) + α G D is the mode damping, η = γ BT /( V S ω ) is the mode power in thermal equilibrium, and D ω λ is the spin wave dispersion coefficient. Here, V is the volume of the film, and λ is the change length. To determine the total power, we for simplicity neglect the -dependence in the numerator of Eq. (3) and consider only the contribution of the low-frequency region < = 1/λ, since high-frequency modes are practically unaffected by the spin torque due to their strong damping. For a large film, we use a continuous-spectrum approximation. The total power p is then γbt d γ BT p = d S α ω λ + Δ 8πdλ ω G S αgω ln Δ, (5) NATURE ATERIALS acmillan Publishers Limited. All rights reserved.
4 SUPPLEENTARY INFORATION DOI: 1.138/NAT3439 where Δ =, and we use approximations = α G ω /, Δ <<. According to Eq. (5), the condition Δ = for the onset of auto-oscillations cannot be achieved at any finite p. In other words, the effect of spin current is self limiting, since the current-induced increase of the total power results in a decreasing effect of spin current on the negative damping. In agreement with this analysis, measurements of the effect of spin current in micrometer- and millimeter-scale devices driven by uniformly distributed spin currents [7,8] showed an increase of the amplitude of magnetic oscillations to substantial levels, but their spectrum remained broad and did not hibit a transition to the coherent auto-oscillation regime. Qualitatively different behaviors are pected when a localized spin current is applied to an tended magnetic film. In this case, spin waves can escape from the active area, creating a new radiation channel for mode damping. Therefore, an additional term describing radiation losses needs to be added into the pression for the total effective damping (Eq. (4)): Here G + / = + α ω ( λ ) v L. (6) v = D is the group velocity of spin waves with the wavevector and L is the size of the spin-current localization area. With the radiation losses, the total power p is γbt d p =. (7) d α ω λ + D / L + Δ At the onset ( Δ = ) it taes the value S G p c γ BT d γbt α ω λ G = ln α ω λ + π λ ω L d D L d. S G / 4 S D One can see that, due to the presence of radiation losses, p c remains finite at Δ =, implying that in this case, the onset of auto-oscillations can be achieved. oreover, for practically important device geometries with the size of the active area of the order of several hundreds of nanometers, the estimated value of p c is relatively small (.1 -.1). As a consequence, 4 NATURE ATERIALS 1 acmillan Publishers Limited. All rights reserved.
5 DOI: 1.138/NAT3459 SUPPLEENTARY INFORATION the nonlinear increase of the onset current due to the multimode citation, given by Eq. (), does not ceed 1%. References 1. Slonczewsi, J. C. Current driven citation of magnetic multilayers. J. agn. agn. ater. 159, L1-L7 (1996).. Berger, L. Emission of spin waves by a magnetic multilayer traversed by a current. Phys. Rev. B 54, (1996). 3. Liu, L., oriyama, T., Ralph, D. C., & Buhrman, R. A. Spin-torque ferromagnetic resonance induced by the spin Hall effect. Phys. Rev. Lett. 16, 3661 (11). 4. Wang, Z., Sun, Y., Wu,., Tiberevich, V., & Slavin, A. Control of spin waves in a thin film ferromagnetic insulator through interfacial spin scattering. Phys. Rev. Lett. 17, 1466 (11). 5. Slavin, A.N. & Tiberevich, V.S. Nonlinear auto-oscillator theory of microwave generation by spin-polarized current. IEEE Trans. ag. 45, (9). 6. Slavin, A.N. & Kabos, P. Approximate theory of microwave generation in a current-driven magnetic nanocontact magnetized in an arbitrary direction. IEEE Trans. ag. 41, (5). 7. Kajiwara, Y. et al. Transmission of electrical signals by spin-wave interconversion in a magnetic insulator. Nature 464, 6 66 (1). 8. Demidov, V. E. et al. Control of magnetic fluctuations by spin current. Phys. Rev. Lett. 17, 174 (11). NATURE ATERIALS acmillan Publishers Limited. All rights reserved.
Unidirectional spin-wave heat conveyer
Unidirectional spin-wave heat conveyer Figure S1: Calculation of spin-wave modes and their dispersion relations excited in a 0.4 mm-thick and 4 mm-diameter Y 3 Fe 5 O 12 disk. a, Experimentally obtained
More informationSPIN TRANSFER TORQUES IN HIGH ANISOTROPY MAGNETIC NANOSTRUCTURES
CRR Report Number 29, Winter 2008 SPIN TRANSFER TORQUES IN HIGH ANISOTROPY AGNETIC NANOSTRUCTURES Eric Fullerton 1, Jordan Katine 2, Stephane angin 3, Yves Henry 4, Dafine Ravelosona 5, 1 University of
More informationSpin-torque nano-oscillators trends and challenging
Domain Microstructure and Dynamics in Magnetic Elements Heraklion, Crete, April 8 11, 2013 Spin-torque nano-oscillators trends and challenging N H ext S Giovanni Finocchio Department of Electronic Engineering,
More informationReport submitted to Prof. P. Shipman for Math 540, Fall 2009
Dynamics at the Horsetooth Volume 1, 009. Three-Wave Interactions of Spin Waves Aaron Hagerstrom Department of Physics Colorado State University aaronhag@rams.colostate.edu Report submitted to Prof. P.
More informationDispersion and Scaling Law of Dynamic Hysteresis Based on the Landau-Lifshitz-Gilbert Model
Dispersion and Scaling Law of Dynamic Hysteresis Based on the Landau-Lifshitz-Gilbert Model Siying Liu, Hongyi Zhang, Hao Yu * Department of Mathematical Sciences, Xi an Jiaotong-Liverpool University,
More informationTemporal Evolution of Auto-Oscillations in an Yttrium- Iron-Garnet/Platinum Microdisk Driven by Pulsed Spin Hall Effect-Induced Spin-Transfer Torque
Temporal Evolution of Auto-Oscillations in an Yttrium- Iron-Garnet/Platinum Microdisk Driven by Pulsed Spin Hall Effect-Induced Spin-Transfer Torque The MIT Faculty has made this article openly available.
More informationFerromagnetic resonance in Yttrium Iron Garnet
Author:. Facultat de Física, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain. Advisor: Joan Manel Hernàndez Ferràs Abstract: his work presents a study of the ferromagnetic resonance of an
More informationMSE 7025 Magnetic Materials (and Spintronics)
MSE 7025 Magnetic Materials (and Spintronics) Lecture 14: Spin Transfer Torque And the future of spintronics research Chi-Feng Pai cfpai@ntu.edu.tw Course Outline Time Table Week Date Lecture 1 Feb 24
More informationHigh-frequency measurements of spin-valve films and devices invited
JOURNAL OF APPLIED PHYSICS VOLUME 93, NUMBER 10 15 MAY 003 High-frequency measurements of spin-valve films and devices invited Shehzaad Kaka, John P. Nibarger, and Stephen E. Russek a) National Institute
More informationMutual synchronization of nano-oscillators driven by pure spin current
Mutual synchronization of nano-oscillators driven by pure spin current S. Urazhdin 1, V. E. Demidov 2*, R. Cao 1,. Divinskiy 2,V. Tyberkevych 3,. Slavin 3,.. Rinkevich 4, and S. O. Demokritov 1,4 1 Department
More informationSupplementary Notes of spin-wave propagation in cubic anisotropy materials
Supplementary Notes of spin-wave propagation in cubic anisotropy materials Koji Sekiguchi, 1, 2, Seo-Won Lee, 3, Hiroaki Sukegawa, 4 Nana Sato, 1 Se-Hyeok Oh, 5 R. D. McMichael, 6 and Kyung-Jin Lee3, 5,
More informationDamping of magnetization dynamics
Damping of magnetization dynamics Andrei Kirilyuk! Radboud University, Institute for Molecules and Materials, Nijmegen, The Netherlands 1 2 Landau-Lifshitz equation N Heff energy gain:! torque equation:
More informationarxiv: v3 [cond-mat.mtrl-sci] 21 May 2008
Coupling efficiency for phase locking of a spin transfer oscillator to a microwave current B. Georges, J. Grollier, M. Darques, V. Cros, C. Deranlot, B. Marcilhac, A. Fert Unité Mixte de Physique CNRS/Thales
More informationExchange Splitting of Backward Volume Spin Wave Configuration Dispersion Curves in a Permalloy Nano-stripe
760 PIERS Proceedings, Kuala Lumpur, MALAYSIA, March 27 30, 2012 Exchange Splitting of Backward Volume Spin Wave Configuration Dispersion Curves in a Permalloy Nano-stripe G. Venkat 1, A. Prabhakar 1,
More informationAn Intrinsic Spin Orbit Torque Nano-Oscillator
arxiv:188.933v1 [cond-mat.mes-hall] 28 Aug 218 An Intrinsic Spin Orbit Torque Nano-Oscillator M. Haidar, 1 A. A. Awad, 1 M. Dvornik, 1 R. Khymyn, 1 A. Houshang, 1 J. Åkerman 1,2 1 Physics Department, University
More informationMEASURE THE COMPLEX PERMEABILITY OF FER- ROMAGNETIC THIN FILMS: COMPARISON SHORTED MICROSTRIP METHOD WITH MICROSTRIP TRANS- MISSION METHOD
Progress In Electromagnetics Research Letters, Vol. 11, 173 181, 2009 MEASURE THE COMPLEX PERMEABILITY OF FER- ROMAGNETIC THIN FILMS: COMPARISON SHORTED MICROSTRIP METHOD WITH MICROSTRIP TRANS- MISSION
More informationMagnetic droplet solitons generated by pure spin currents
Magnetic droplet solitons generated by pure spin currents B. Divinskiy 1*, S. Urazhdin 2, V. E. Demidov 1, A. Kozhanov 3,4, A. P. Nosov 5, A. B. Rinkevich 5, and S. O. Demokritov 1,5 1 Institute for Applied
More informationCurrent-Induced Domain-Wall Dynamics in Ferromagnetic Nanowires
Current-Induced Domain-Wall Dynamics in Ferromagnetic Nanowires Benjamin Krüger 17.11.2006 1 Model The Micromagnetic Model Current Induced Magnetisation Dynamics Phenomenological Description Experimental
More informationSUPPLEMENTARY INFORMATION
Magnetization switching through giant spin-orbit torque in a magnetically doped topological insulator heterostructure Yabin Fan, 1,,* Pramey Upadhyaya, 1, Xufeng Kou, 1, Murong Lang, 1 So Takei, 2 Zhenxing
More informationMagnetization reversal in the presence of thermal agitation and spin-transfer torques
Magnetization reversal in the presence of thermal agitation and spin-transfer torques Y.P. Kalmykov, W.T. Coffey, S.V. Titov, J.E. Wegrowe, D. Byrne Université de Perpignan Trinity College Dublin IREE
More informationCurrent-driven ferromagnetic resonance, mechanical torques and rotary motion in magnetic nanostructures
Current-driven ferromagnetic resonance, mechanical torques and rotary motion in magnetic nanostructures Alexey A. Kovalev Collaborators: errit E.W. Bauer Arne Brataas Jairo Sinova In the first part of
More informationMagnetization Dynamics
Magnetization Dynamics Italian School on Magnetism Pavia - 6-10 February 2012 Giorgio Bertotti INRIM - Istituto Nazionale di Ricerca Metrologica, Torino, Italy Part I Free energy of a ferromagnetic body:
More informationNon-Maxwell-Boltzmann statistics in spin-torque devices: calculating switching rates and oscillator linewidths
Non-axwell-Boltzmann tatitic in pin-torque device: calculating witching rate and ocillator linewidth P. B.Vicher and D.. Apalkov Department of Phyic and Atronomy Thi project wa upported by NSF grant #
More informationFokker-Planck calculation of spintorque switching rates: comparison with telegraph-noise data
Fokker-Planck calculation of spintorque switching rates: comparison with telegraph-noise data P. B.Visscher and D. M. Apalkov Department of Physics and Astronomy The University of Alabama This project
More informationREPORT DOCUMENTATION PAGE
REPORT DOCUMENTATION PAGE Form Approved OMB No. 74-88 Public reporting burden for this collection of information is estimated to average hour per response, including the time for reviewing instructions,
More informationResonance Measurement of Nonlocal Spin Torque in a Three-Terminal Magnetic Device
Resonance Measurement of Nonlocal Spin Torque in a Three-Terminal Magnetic Device Lin Xue 1, Chen Wang 1, Yong-Tao Cui 1, Luqiao Liu 1, A. Swander 1, J. Z. Sun 3, R. A. Buhrman 1 and D. C. Ralph 1,2 1
More information0.002 ( ) R xy
a b z 0.002 x H y R xy () 0.000-0.002 0 90 180 270 360 (degree) Supplementary Figure 1. Planar Hall effect resistance as a function of the angle of an in-plane field. a, Schematic of the planar Hall resistance
More informationNonlinear Electrodynamics and Optics of Graphene
Nonlinear Electrodynamics and Optics of Graphene S. A. Mikhailov and N. A. Savostianova University of Augsburg, Institute of Physics, Universitätsstr. 1, 86159 Augsburg, Germany E-mail: sergey.mikhailov@physik.uni-augsburg.de
More informationMagnetic domain theory in dynamics
Chapter 3 Magnetic domain theory in dynamics Microscale magnetization reversal dynamics is one of the hot issues, because of a great demand for fast response and high density data storage devices, for
More informationControlled enhancement of spin current emission by three-magnon splitting
Controlled enhancement of spin current emission by three-magnon splitting Hidekazu Kurebayashi* 1, Oleksandr Dzyapko 2, Vlad E. Demidov 2, Dong Fang 1, Andrew J. Ferguson 1 and Sergej O. Demokritov 2 1
More informationSpin pumping in Ferromagnet-Topological Insulator-Ferromagnet Heterostructures Supplementary Information.
Spin pumping in Ferromagnet-Topological Insulator-Ferromagnet Heterostructures Supplementary Information. A.A. Baker,, 2 A.I. Figueroa, 2 L.J. Collins-McIntyre, G. van der Laan, 2 and T., a) Hesjedal )
More informationarxiv: v1 [cond-mat.mes-hall] 11 Dec 2014
APS/123-QED Magnetic field induced spin wave energy focusing Noel Perez and Luis Lopez-Diaz Department of Applied Physics, University of Salamanca, Plaza de los Caidos s/n 37008, Salamanca, Spain arxiv:1412.4129v1
More informationTime resolved transport studies of magnetization reversal in orthogonal spin transfer magnetic tunnel junction devices
Invited Paper Time resolved transport studies of magnetization reversal in orthogonal spin transfer magnetic tunnel junction devices Georg Wolf a, Gabriel Chaves-O Flynn a, Andrew D. Kent a, Bartek Kardasz
More informationS. Mangin 1, Y. Henry 2, D. Ravelosona 3, J.A. Katine 4, and S. Moyerman 5, I. Tudosa 5, E. E. Fullerton 5
Spin transfer torques in high anisotropy magnetic nanostructures S. Mangin 1, Y. enry 2, D. Ravelosona 3, J.A. Katine 4, and S. Moyerman 5, I. Tudosa 5, E. E. Fullerton 5 1) Laboratoire de Physique des
More informationSUPPLEMENTARY INFORMATION
SUPPLEMENTARY INFORMATION DOI: 1.138/NPHYS98 Electric-field-induced ferromagnetic resonance excitation in an ultrathin ferromagnetic metal layer Takayuki Nozaki 1,*, 3, Yoichi Shiota 1, Shinji Miwa 1,
More informationSpin-Hall nano-oscillator with oblique magnetization and Dzyaloshinskii-Moriya interaction as generator of skyrmions and nonreciprocal spin-waves
SUPPLEMENTARY INFORMATION Spin-Hall nano-oscillator with oblique magnetization and Dzyaloshinskii-Moriya interaction as generator of skyrmions and nonreciprocal spin-waves A. Giordano, R. Verba, R. Zivieri,
More informationTheory of magnetoelastic dissipation due to domain wall width oscillation
JOURNAL OF APPLIED PHYSICS VOLUME 83, NUMBER 11 1 JUNE 1998 Theory of magnetoelastic dissipation due to domain wall width oscillation Y. Liu and P. Grütter a) Centre for the Physics of Materials, Department
More informationSpin wave assisted current induced magnetic. domain wall motion
Spin wave assisted current induced magnetic domain wall motion Mahdi Jamali, 1 Hyunsoo Yang, 1,a) and Kyung-Jin Lee 2 1 Department of Electrical and Computer Engineering, National University of Singapore,
More informationarxiv:cond-mat/ v1 [cond-mat.other] 13 Apr 2006
arxiv:cond-mat/060439v1 cond-mat.other] 13 Apr 006 Spin-wave instability for parallel pumping in ferromagnetic thin films under oblique field Kazue Kudo, Katsuhiro Nakamura Department of Applied Physics,
More informationCurrent-induced switching in a magnetic insulator
In the format provided by the authors and unedited. DOI: 10.1038/NMAT4812 Current-induced switching in a magnetic insulator Can Onur Avci, Andy Quindeau, Chi-Feng Pai 1, Maxwell Mann, Lucas Caretta, Astera
More informationMicromagnetics of single and double point contact spin torque oscillators. Sir Robert Hadfieldbuilding, Mapping Street, S13JD Sheffield, UK
Micromagnetics of single and double point contact spin torque oscillators Gino Hrkac 1, Julian Dean 1, Alexander Goncharov 1, Simon Bance 1, Dan Allwood 1, Thomas Schrefl 1, Dieter Suess 2 and Josef Fidler
More informationSupplementary material for : Spindomain-wall transfer induced domain. perpendicular current injection. 1 ave A. Fresnel, Palaiseau, France
SUPPLEMENTARY INFORMATION Vertical-current-induced Supplementary material for : Spindomain-wall transfer induced domain motion wallin MgO-based motion in MgO-based magnetic magnetic tunnel tunneljunctions
More informationLarge-amplitude coherent spin waves excited by spin-polarized current in nanoscale spin valves
Large-amplitude coherent spin waves excited by spin-polarized current in nanoscale spin valves I. N. Krivorotov Department of Physics and Astronomy, University of California, Irvine, California 92697-4575,
More informationFormation and Long Term Evolution of an Externally Driven Magnetic Island in Rotating Plasmas )
Formation and Long Term Evolution of an Externally Driven Magnetic Island in Rotating Plasmas ) Yasutomo ISHII and Andrei SMOLYAKOV 1) Japan Atomic Energy Agency, Ibaraki 311-0102, Japan 1) University
More informationDirect observation of the skyrmion Hall effect
SUPPLEMENTARY INFORMATION DOI: 10.1038/NPHYS3883 Direct observation of the skyrmion Hall effect Wanjun Jiang 1,2,3, *,, Xichao Zhang 4,*, Guoqiang Yu 5, Wei Zhang 1, Xiao Wang 6, M. Benjamin Jungfleisch
More informationFERROMAGNETIC RESONANCE MEASUREMENTS AND SIMULATIONS ON PERIODIC HOLE AND DISC ARRAYS. MISM Conference August, 2011
FERROMAGNETIC RESONANCE MEASUREMENTS AND SIMULATIONS ON PERIODIC HOLE AND DISC ARRAYS J. Skelenar, S. Chernyashevskyy, J. B. Ketterson; Northwestern University V. Bhat, L. Delong; University of Kentucky
More informationMagnetic oscillations driven by the spin Hall effect in 3-terminal magnetic tunnel junction. devices. Cornell University, Ithaca, NY 14853
Magnetic oscillations driven by the spin Hall ect in 3-terminal magnetic tunnel junction devices Luqiao Liu 1, Chi-Feng Pai 1, D. C. Ralph 1,2, R. A. Buhrman 1 1 Cornell University, Ithaca, NY 14853 2
More informationMicrowave fields driven domain wall motions in antiferromagnetic nanowires. Microstructures, Nanjing University, Nanjing , China
Microwave fields driven domain wall motions in antiferromagnetic nanowires Z. Y. Chen 1,*, Z. R. Yan 1,*, Y. L. Zhang 1, M. H. Qin 1,, Z. Fan 1, X. B. Lu 1, X. S. Gao 1, and J. M. Liu 2, 1 Institute for
More informationMesoscopic Spintronics
Mesoscopic Spintronics Taro WAKAMURA (Université Paris-Sud) Lecture 2 Today s Topics 2.1 Anomalous Hall effect and spin Hall effect 2.2 Spin Hall effect measurements 2.3 Interface effects Anomalous Hall
More informationThermal characterization of Au-Si multilayer using 3- omega method
Thermal characterization of Au-Si multilayer using 3- omega method Sunmi Shin Materials Science and Engineering Program Abstract As thermal management becomes a serious issue in applications of thermoelectrics,
More informationMagnetic properties of spherical fcc clusters with radial surface anisotropy
Magnetic properties of spherical fcc clusters with radial surface anisotropy D. A. Dimitrov and G. M. Wysin Department of Physics Kansas State University Manhattan, KS 66506-2601 (December 6, 1994) We
More informationarxiv:cond-mat/ v1 1 Dec 1999
Impurity relaxation mechanism for dynamic magnetization reversal in a single domain grain Vladimir L. Safonov and H. Neal Bertram Center for Magnetic Recording Research, University of California San arxiv:cond-mat/9912014v1
More informationEffect of heavy metal layer thickness on spin-orbit torque and current-induced. switching in Hf CoFeB MgO structures 90095, USA USA.
Effect of heavy metal layer thickness on spin-orbit torque and current-induced switching in Hf CoFeB MgO structures Mustafa Akyol, 1, 2 Wanjun Jiang, 3 Guoqiang Yu, 1 Yabin Fan, 1 Mustafa Gunes, 4 Ahmet
More information.O. Demokritov niversität Münster, Germany
Quantum Thermodynamics of Magnons.O. Demokritov niversität Münster, Germany Magnon Frequency Population BEC-condensates http://www.uni-muenster.de/physik/ap/demokritov/ k z k y Group of NonLinea Magnetic
More informationNanomagnetism a perspective from the dynamic side
Nanomagnetism a perspective from the dynamic side Burkard Hillebrands Fachbereich Physik and Research Center OPTIMAS Technische Universität Kaiserslautern Kaiserslautern, Germany TNT 2009 Nanotechnology
More informationMicromagnetic simulations of current-induced magnetization switching in Co/ Cu/ Co nanopillars
JOURNAL OF APPLIED PHYSICS 102, 093907 2007 Micromagnetic simulations of current-induced magnetization switching in Co/ Cu/ Co nanopillars Z. H. Xiao, X. Q. Ma, a and P. P. Wu Department of Physics, University
More informationSkyrmion based microwave detectors and harvesting
Skyrmion based microwave detectors and harvesting G. Finocchio 1, M. Ricci, R. Tomasello 3, A. Giordano 1, M. Lanuzza 3, V. Puliafito, 1 P. Burrascano, B. Azzerboni 1, and M. arpentieri 4 1 Department
More informationLow Field, Current-Hysteretic Oscillations in Spin Transfer Nanocontacts. M. R. Pufall, W. H. Rippard, M. Schneider, S. E. Russek
Low Field, Current-Hysteretic Oscillations in Spin Transfer Nanocontacts M. R. Pufall, W. H. Rippard, M. Schneider, S. E. Russek Electromagnetics Division, National Institute of Standards and Technology,
More informationEnhanced spin orbit torques by oxygen incorporation in tungsten films
Enhanced spin orbit torques by oxygen incorporation in tungsten films Timothy Phung IBM Almaden Research Center, San Jose, California, USA 1 Motivation: Memory devices based on spin currents Spin Transfer
More informationSpatiotemporal magnetic imaging at the nanometer and picosecond scales
AFOSR Nanoelectronics Review, Oct. 24, 2016 Spatiotemporal magnetic imaging at the nanometer and picosecond scales Gregory D. Fuchs School of Applied & Engineering Physics, Cornell University T M V TRANE
More informationvoltage measurement for spin-orbit torques"
SUPPLEMENTARY for article "Accurate analysis for harmonic Hall voltage measurement for spin-orbit torques" Seok Jin Yun, 1 Eun-Sang Park, 2 Kyung-Jin Lee, 1,2 and Sang Ho Lim 1,* 1 Department of Materials
More informationDesigning Magnetic Droplet Soliton Nucleation Employing Spin Polarizer
Designing Magnetic Droplet Soliton Nucleation Employing Spin Polarizer Morteza Mohseni 1, and Majid Mohseni 1,* 1 Faculty of Physics, Shahid Beheshti University, Evin, 19839 Tehran, Iran Abstract We show
More informationarxiv: v3 [cond-mat.stat-mech] 1 Dec 2016
Effects of Landau-Lifshitz-Gilbert damping on domain growth Kazue Kudo Department of Computer Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-861, Japan (Dated: December 2, 216) arxiv:162.6673v3
More informationSupplementary Figures
Supplementary Figures Supplementary Figure 1: Bloch point formation during skyrmion annihilation. Skyrmion number in layers with different z-coordinate during the annihilation of a skyrmion. As the skyrmion
More informationSupplementary Information: Electrically Driven Single Electron Spin Resonance in a Slanting Zeeman Field
1 Supplementary Information: Electrically Driven Single Electron Spin Resonance in a Slanting Zeeman Field. Pioro-Ladrière, T. Obata, Y. Tokura, Y.-S. Shin, T. Kubo, K. Yoshida, T. Taniyama, S. Tarucha
More informationA Brief Introduction to Medical Imaging. Outline
A Brief Introduction to Medical Imaging Outline General Goals Linear Imaging Systems An Example, The Pin Hole Camera Radiations and Their Interactions with Matter Coherent vs. Incoherent Imaging Length
More informationANALYSIS OF AN INJECTION-LOCKED BISTABLE SEMICONDUCTOR LASER WITH THE FREQUENCY CHIRPING
Progress In Electromagnetics Research C, Vol. 8, 121 133, 2009 ANALYSIS OF AN INJECTION-LOCKED BISTABLE SEMICONDUCTOR LASER WITH THE FREQUENCY CHIRPING M. Aleshams Department of Electrical and Computer
More informationMagnetic domain-wall velocity oscillations in permalloy nanowires
PHYSICAL REVIEW B 77, 443 8 Magnetic domain-wall velocity oscillations in permalloy nanowires Jusang Yang, Corneliu Nistor, G. S. D. Beach, and J. L. Erskine* Department of Physics, The University of Texas
More informationLarge-amplitude coherent spin waves exited by spin-polarized current in nanoscale spin valves
Large-amplitude coherent spin waves exited by spin-polarized current in nanoscale spin valves I. N. Krivorotov Department of Physics and Astronomy, University of California, Irvine, CA 92697-4575 D. V.
More informationarxiv:cond-mat/ v1 4 Oct 2002
Current induced spin wave excitations in a single ferromagnetic layer Y. Ji and C. L. Chien Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland arxiv:cond-mat/0210116v1
More informationSynchronization of semiconductor laser arrays with 2D Bragg structures
Journal of Physics: Conference Series PAPER OPEN ACCESS Synchroniation of semiconductor laser arrays with D Bragg structures To cite this article: V R Baryshev and N S Ginburg 06 J. Phys.: Conf. Ser. 740
More informationGraphene for THz technology
Graphene for THz technology J. Mangeney1, J. Maysonnave1, S. Huppert1, F. Wang1, S. Maero1, C. Berger2,3, W. de Heer2, T.B. Norris4, L.A. De Vaulchier1, S. Dhillon1, J. Tignon1 and R. Ferreira1 1 Laboratoire
More informationSpin Funneling for Enhanced Spin Injection into Ferromagnets: Supplementary Information
Spin Funneling for Enhanced Spin Injection into Ferromagnets: Supplementary Information Shehrin Sayed, Vinh Q. Diep, Kerem Yunus Camsari, and Supriyo Datta School of Electrical and Computer Engineering,
More informationIEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 63, NO. 11, NOVEMBER
IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 63, NO. 11, NOVEMBER 2016 4499 All-Spin-Orbit Switching of Perpendicular Magnetization Mohammad Kazemi, Student Member, IEEE, Graham E. Rowlands, Shengjie Shi,
More informationRobust magnon-photon coupling in a planar-geometry hybrid of. inverted split-ring resonator and YIG film
SUPPLEMENTARY MATERIALS Robust magnon-photon coupling in a planar-geometry hybrid of inverted split-ring resonator and YIG film Bianath Bhoi, Bosung Kim, Junhoe Kim, Young-Jun Cho and Sang-Koog Kim a)
More informationSpin Seebeck and Spin Peltier Effects
at Hvar (October 1-7, 2017) Spin Seebeck and Spin Peltier Effects Sadamichi Maekawa Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Japan References: S. Maekawa(ed.) Concepts in Spin
More informationSoliton solution for the spin current in a ferromagnetic nanowire
Soliton solution for the spin current in a ferromagnetic nanowire Zai-Dong Li 1 Qiu-Yan Li 1 Lu Li and W. M. Liu 3 1 Department of Applied Physics Hebei University of Technology Tianjin 300401 China College
More informationSpin orbit torque driven magnetic switching and memory. Debanjan Bhowmik
Spin orbit torque driven magnetic switching and memory Debanjan Bhowmik Spin Transfer Torque Fixed Layer Free Layer Fixed Layer Free Layer Current coming out of the fixed layer (F2) is spin polarized in
More informationSpin wave excitations of a magnetic pillar with dipolar coupling between the layers
RAPID COMMUNICATION Spin wave excitations of a magnetic pillar with dipolar coupling between the layers O Dmytriiev 1,2, T Meitzler 3, E Bankowski 3, A Slavin 1 and V Tiberkevich 1 1 Department of Physics,
More informationTheory of bifurcation amplifiers utilizing the nonlinear dynamical response of an optically damped mechanical oscillator
Theory of bifurcation amplifiers utilizing the nonlinear dynamical response of an optically damped mechanical oscillator Research on optomechanical systems is of relevance to gravitational wave detection
More informationSpin pumping in magnetic trilayer structures with an MgO barrier Supplementary Information.
Spin pumping in magnetic trilayer structures with an MgO barrier Supplementary Information. A. A. Baker, 1, 2 A. I. Figueroa, 2 D. Pingstone, 3 V. K. Lazarov, 3 G. van der Laan, 2 and 1, a) T. Hesjedal
More informationROTATIONAL STABILITY OF A CHARGED DIELEC- TRIC RIGID BODY IN A UNIFORM MAGNETIC FIELD
Progress In Electromagnetics Research Letters, Vol. 11, 103 11, 009 ROTATIONAL STABILITY OF A CHARGED DIELEC- TRIC RIGID BODY IN A UNIFORM MAGNETIC FIELD G.-Q. Zhou Department of Physics Wuhan University
More informationR. Ramesh Department of Materials Engineering, University of Maryland at College Park, College Park, Maryland 20742
JOURNAL OF APPLIED PHYSICS VOLUME 85, NUMBER 11 1 JUNE 1999 Angle dependence of the ferromagnetic resonance linewidth and two magnon losses in pulsed laser deposited films of yttrium iron garnet, MnZn
More informationThickness Dependence of Magnetic Hysteresis of Ising Films in Nano-thickness Range
CMU. J.Nat.Sci. Special Issue on Nanotechnology (2008) Vol. 7(1) 203 Thickness Dependence of Magnetic Hysteresis of Ising Films in Nano-thickness Range Atchara Punya 1*, Pitak Laoratanakul 2, Rattikorn
More informationCritical Phenomena under Shear Flow
Critical Phenomena under Shear Flow Pavlik Lettinga, Hao Wang, Jan K.G. Dhont Close to a gas-liquid critical point, effective interactions between particles become very long ranged, and the dynamics of
More informationSpin-transfer-torque efficiency enhanced by edge-damage. of perpendicular magnetic random access memories
Spin-transfer-torque efficiency enhanced by edge-damage of perpendicular magnetic random access memories Kyungmi Song 1 and Kyung-Jin Lee 1,2,* 1 KU-KIST Graduate School of Converging Science and Technology,
More informationA simple vision of current induced spin torque in domain walls
A simple vision of current induced spin torque in domain walls A. Vanhaverbeke and M. Viret Service de physique de l état condensé (CNRS URA 464), CEA Saclay F-91191 Gif-sur-Yvette cedex, France (Dated:
More informationStrong linewidth variation for spin-torque nano-oscillators as a function of in-plane magnetic field angle
Strong linewidth variation for spin-torque nano-oscillators as a function of in-plane magnetic field angle K. V. Thadani, 1 G. Finocchio, 2 Z.-P. Li, 1 O. Ozatay, 1 J. C. Sankey, 1 I. N. Krivorotov, 3
More informationSupplementary Figures
Supplementary Figure Supplementary Figure S1: Extraction of the SOF. The tandard deviation of meaured V xy at aturated tate (between 2.4 ka/m and 12 ka/m), V 2 d Vxy( H, j, hm ) Vxy( H, j, hm ) 2. The
More informationPlan of the lectures
Plan of the lectures 1. Introductory remarks on metallic nanostructures Relevant quantities and typical physical parameters Applications. Linear electron response: Mie theory and generalizations 3. Nonlinear
More informationSpring 2009 EE 710: Nanoscience and Engineering
Spring 009 EE 710: Nanoscience and Engineering Part 8: Sprintronics Images and figures supplied from Goddard, et.al, Handbook of Nanoscience, Engineering, and Technology, CRC Press, 004 and other refereed
More informationUnderstanding Turbulence is a Grand Challenge
The Turbulent Structure of a Plasma Confined by a Magnetic Dipole B. A. Grierson M.W. Worstell, M.E. Mauel ICC 28 Reno, NV 1 Understanding Turbulence is a Grand Challenge Ubiquitous in natural and laboratory
More informationOptical Spectroscopy of Advanced Materials
Phys 590B Condensed Matter Physics: Experimental Methods Optical Spectroscopy of Advanced Materials Basic optics, nonlinear and ultrafast optics Jigang Wang Department of Physics, Iowa State University
More information5.74 Introductory Quantum Mechanics II
MIT OpenCourseWare http://ocw.mit.edu 5.74 Introductory Quantum Mechanics II Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. p. 10-0 10..
More informationMicromagnetic Modeling
Micromagnetic Modeling P. B. Visscher Xuebing Feng, D. M. Apalkov, and Arkajyoti Misra Department of Physics and Astronomy Supported by NSF grants # ECS-008534 and DMR-0213985, and DOE grant # DE-FG02-98ER45714
More informationSupplementary information for. plasmonic nanorods interacting with J-aggregates.
Supplementary information for Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates. by Gülis Zengin, Göran Johansson, Peter Johansson, Tomasz J. Antosiewicz,
More informationSpectroscopy in frequency and time domains
5.35 Module 1 Lecture Summary Fall 1 Spectroscopy in frequency and time domains Last time we introduced spectroscopy and spectroscopic measurement. I. Emphasized that both quantum and classical views of
More informationSpin transfer torque devices utilizing the giant spin Hall effect of tungsten
Spin transfer torque devices utilizing the giant spin Hall effect of tungsten Chi-Feng Pai, 1,a) Luqiao Liu, 1 Y. Li, 1 H. W. Tseng, 1 D. C. Ralph 1,2 and R. A. Buhrman 1 1 Cornell University, Ithaca,
More informationSimulation results for magnetized plasmas
Chapter 4 Simulation results for magnetized plasmas In this chapter, we consider the dust charge fluctuation mode and lower hybrid wave damping in a magnetized plasma. Also, we consider plasma instabilities
More informationOn Electron-Cyclotron Waves in Relativistic Non-Thermal Tokamak Plasmas
1 On Electron-Cyclotron Waves in Relativistic Non-Thermal Tokamak Plasmas Lj. Nikolić and M.M. Škorić Vinča Institute of Nuclear Sciences, P.O.Box 522, Belgrade 11001, Serbia and Montenegro ljnikoli@tesla.rcub.bg.ac.yu
More information