Strongly Correlated Electrons on Frustrated Lattices

被引：7
|
作者：
Tsunetsugu, H. [1 ]
Hattori, K. [1 ]
Ohashi, T. [2 ]
Kawakami, N. [3 ]
Momoi, T. [4 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Chiba 2778581, Japan
[2] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[3] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[4] RIKEN, Condensed Matter Theory Lab, Wako, Saitama 3510198, Japan
来源：
HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008) | 2009年 / 145卷
关键词：
HEAVY; LIV2O4; SPINEL; MODEL; STATE;
D O I：
10.1088/1742-6596/145/1/012015
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We review our two recent theoretical works on strongly correlated electrons on typical frustrated lattices. The first topic is about a Mott transition in the single-band Hubbard model on anisotropic triangular lattice, and we discuss a reentrant behaviour of metal-insulator transition, consistent with that in a kappa-type BEDT-TTF salt. The second topic is about heavy fermion behaviour in the vanadium spinel LiV2O4. We study the 3-orbital t(2g) Hubbard model on the pyrochlore lattice at quarter filling and derive its low-energy effective model. The correlations of spin and orbital degrees of freedom are discussed.
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收藏
页数：8
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