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.

引用

页数：8

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