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

页码：3249 / 3252

页数：4

共 13 条

[1] Numerical renormalization group method for quantum impurity systems [J].

Bulla, Ralf ;

Costi, Theo A. ;

Pruschke, Thomas .

REVIEWS OF MODERN PHYSICS, 2008, 80 (02) :395-450

[2] Dynamical mean field theory of the antiferromagnetic metal to antiferromagnetic insulator transition [J].

Chitra, R ;

Kotliar, G .

PHYSICAL REVIEW LETTERS, 1999, 83 (12) :2386-2389

[3] Indications of a metallic antiferromagnetic phase in the two-dimensional U-t-t' model [J].

Duffy, D ;

Moreo, A .

PHYSICAL REVIEW B, 1997, 55 (02) :R676-R679

[4] Hopping on the Bethe lattice: Exact results for densities of states and dynamical mean-field theory [J].

Eckstein, M ;

Kollar, M ;

Byczuk, K ;

Vollhardt, D .

PHYSICAL REVIEW B, 2005, 71 (23)

[5] Dynamical mean-field theory of strongly correlated fermion systems and the limit of infinite dimensions [J].

Georges, A ;

Kotliar, G ;

Krauth, W ;

Rozenberg, MJ .

REVIEWS OF MODERN PHYSICS, 1996, 68 (01) :13-125

[6] Frustration of antiferromagnetism in the t-t′-Hubbard model at weak coupling [J].

Hofstetter, W ;

Vollhardt, D .

ANNALEN DER PHYSIK, 1998, 7 (01) :48-55

[7] Metal-insulator transitions [J].

Imada, M ;

Fujimori, A ;

Tokura, Y .

REVIEWS OF MODERN PHYSICS, 1998, 70 (04) :1039-1263

[8] Transport and magnetic properties of a Mott-Hubbard system whose bandwidth and band filling are both controllable: R1-xCaxTiO3+y/2 [J].

Katsufuji, T ;

Taguchi, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1997, 56 (16) :10145-10153

[9] Green functions for nearest- and next-nearest-neighbor hopping on the Bethe lattice [J].

Kollar, M ;

Eckstein, M ;

Byczuk, K ;

Blümer, N ;

van Dongen, P ;

de Cuba, MHR ;

Metzner, W ;

Tanaskovic, D ;

Dobrosavljevic, V ;

Kotliar, G ;

Vollhardt, D .

ANNALEN DER PHYSIK, 2005, 14 (9-10) :642-657

[10] METAL-INSULATOR TRANSITIONS IN PURE AND DOPED V2O3 [J].

MCWHAN, DB ;

MENTH, A ;

REMEIKA, JP ;

BRINKMAN, WF ;

RICE, TM .

PHYSICAL REVIEW B, 1973, 7 (05) :1920-1931

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