Fermi Surface and Lattice Effects in Cuprate High Temperature Superconductors - Emerging Electronic Landscape and Unconventional Lattice Effects-

Transcription

1 International Workshop on Fermi Surface and Lattice Effects in Cuprate High Temperature Superconductors - Emerging Electronic Landscape and Unconventional Lattice Effects- October 31st, 2003, D821-2, 8 th Fl., AIST Central 2 National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan, Organizer: Hiroyuki Oyanagi, h.oyanagi@aist.go.jp, Photonics Research Institute, AIST

2 Scope Inspite of vigorous efforts searching for the mechanism of high temperature superconductivity (HTSC) over the past years, many puzzling problems still remain to be answered. Obviously, we need to reconcile contradictions by improving our approach. Indeed, most of the proposed mechanisms based on a strong electron correlation have completely neglected lattice effects 1. Recently, however, evidence for strong coupling between quasiparticle and phonons was revealed by angle-resolved photoemission studies, implying that most of the HTSC models should be reexamined. In the present workshop, we will review our present knowledge on Fermi surface and lattice effects in cuprate superconductors. Our goal is to understand unconventional electron states properly takinglattice effects into account, through interactive discussions among experts in related theories and experiments. History tells us that innovations often start from a minority view. 1 Lattice effects in High Tc Superconductors, SantaFe, 1992; Stripes and High Tc Superconductivity, Rome,1998, 2000, 2002, Physics in Local Lattice Distortions, Tsukuba, 2000; Local and Nanoscale Structures in Complex Systems, SantaFe, 2002; Dynamic Inhomogeneity in Complex Oxides, Bled, 2003

3 Program 10:00-10:10 Opening Remarks, H. Oyanagi, AIST, Japan Chair: K. Yamaji, AIST, Japan 10:10-11:30 Relation between Fermi Surfaces and the Origin of the Pseudogap H. Kamimura, Tokyo Univ. of Science, Japan 11:30-12:10 Spin-Charge Inhomogeneity, Lattice distortions and Spin-Orbit in Doped Cuprates T. Yanagisawa, AIST, Japan 12:10-12:30 Progress Report: Superconducting Window of the 2D Hubbard Model -- Computational Study K. Yamaji, AIST, Japan 12:30-14:00 Lunch break Chair: H. Kamimura, Tokyo Univ. of Science, Japan 14:00-15:00 Competing Degrees of Freeedom in the Physics of High Temperature Superconductors A. Lanzara, Univ. of California, Berkeley, USA 15:00-15:40 Fermi Surface and Inhomogeneity Effects in Cuprate Superconductors Reviews and Recent Topics- T. Mizokawa, Univ. of Tokyo, Japan

4 15:40-16:00 Coffee Break 16:00-17:00 Evidence for Unconventional Electron-Phonon Interaction Effects in High Temperature Superconducting Oxides from Isotope Effects on the London Penetration Depth A. Bussmann-Holder, Max-Planck Institute, Germany Chair: A. Bussmann-Holder, Max-Planck Institute, Germany 17:00-17:40 Temperature Dependent Local Cu-O Displacements from Underdoped to Overdoped La-Sr-Cu-O Superconductors N.L. Saini, Univ. of Rome, Italy 17:40-18:20 Anomalous Lattice Effects in Cuprates Superconductors Under Stress H. Oyanagi, AIST, Japan 18:20 Closing Remarks H. Kamimura, Tokyo Univ. of Science, Japan 18:30-20:00 Wine Party (M604, 6 th Fl., AIST Central 2) Special talk T. Egami, Oak Ridge National Laboratory and University of Tennessee

5 Registration Registration fee is not needed. On-site registration will be made at the workshop registration desk, Rm D-821-2, 8th fl. of AIST Central 2 (See the map). Those who need accomodation should contactthe secretariat below. Presentations will be given in Powerpoint. Powerpoint files can be sent to the secretariat electronically. Information on extended abstract submission will be announced later. Extended abstract booklet will be provided to the participants at the registration desk. No proceedings are planned but web-site report with links to speakers URLs will follow the workshop. Secretariat Secretariat: Ms. Masayo Fujita, m.fujita@aist.go.jp phone , fax Accomodation Accomodation is available at Guest House, Sakura-kan (see the map of AIST Tsukuba Research Center). For reservations, please contact workshop secretariat. Guest House (Sakura-kan)

6 Site information Map of AIST Central Workshop site is Rm , 8th floor of AIST Central 2 building (see photo). From Tokyo, an express bus service (55 min.) is available. Central 2 building Central 2 For extended view of Tsukuba Science City, click the right map.

7 Map of AIST Central Central 2

8 Map of AIST Central

9 Climate Climate in Tsukuba at this time of year (late October) is comfortable. Blue skies and beautiful autumn leaves (see the photo) will welcome you. One may need extra clothing in the late evening and early morning. During daytime sunny places are warm enough and no chance of rain is expected. Sunset at Lake Kasumigaura Related conferences Bird s eye view of Tsukuba City and Mt. Tsukuba Autumn leaves at AIST campus 16th International Symposium on Superconductivity (ISS2003) Tsukuba International Congress Center, October 27-29, 2003 (