Magnetic phase diagram of the Hubbard model with next-nearest neighbor hopping

被引：0
|
作者：
Peters, R. [1 ]
Pruschke, Th. [1 ]
机构：
[1] Univ Gottingen, Inst Theoret Phys, D-3400 Gottingen, Germany
来源：
PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 19期
关键词：
Hubbard model; Bethe lattice; DMFT; Frustration; Magnetic order; METAL-INSULATOR TRANSITIONS; MEAN-FIELD THEORY; RENORMALIZATION-GROUP; SYSTEMS;
D O I：
10.1016/j.physb.2009.07.083
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study the interplay between antiferromagnetism and the paramagnetic metal-insulator-transition (PMIT) on a Bethe lattice with nearest and next-nearest neighbor hopping. For t(2)/t(1) -> 1 the PMIT outgrows the antiferromagnetic phase and shows a scenario similar to V(2)O(3). We also look at other ordered phases for the doped system, where we find a ferromagnetic phase. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：3249 / 3252
页数：4
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