Date & Time |
30 October 2008 (Thur), 3:00 pm - 4:30 pm
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|---|---|
Place |
8F large seminar room, Sengen site
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Speaker |
Dr. Hiroyuki Yamase(山瀬博之博士)
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Affiliation |
Materials Interdisciplinary G, Innovative Materials Engineering Lab., NIMS(NIMS材料ラボ 融合領域研究G)
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Title |
Pomeranchuk instability in correlated electron systems
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Abstract |
The spontaneous Fermi surface symmetry breaking, the so-called Pomeranchuk instability, is a fundamentally new concept in the physics of correlated electron systems [1,2]. This instability breaks the point-group symmetry of the underlying lattice structure.
In this talk, I discuss the most fundamental aspect of Pomeranchuk instability by performing the exact analysis of a pure forward scattering model. Current understanding of Pomeranchuk instability for high-temperature cuprate superconductors and strontium ruthenates is also reviewed.
[1] H. Yamase and H. Kohno, JPSJ 69, 332 (2000); 69, 2151 (2000).
[2] C. J. Halboth and W. Metzner, PRL 85, 5162 (2000).
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Contact |
Dr. Akihiro Tanaka(田中秋広） 
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Pomeranchuk instability in correlated electron systems
