GENERALIZED HUBBARD HAMILTONIAN - RENORMALIZATION-GROUP APPROACH

被引：5

作者：

CANNAS, SA ^{[1
]}

TAMARIT, FA ^{[1
]}

TSALLIS, C ^{[1
]}

机构：

[1] NATL UNIV CORDOBA,FAC MATEMAT ASTRON & FIS,RA-5000 CORDOBA,ARGENTINA

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.45.10496

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study a generalized Hubbard Hamiltonian which is closed within the framework of a quantum real-space renormalization group, which replaces the d-dimensional hypercubic lattice by a diamondlike lattice. The phase diagram of the generalized Hubbard Hamiltonian is analyzed for the half-filled-band case for d = 2 and d = 3. Some evidence for superconductivity is presented.

引用

页码：10496 / 10508

页数：13

共 47 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[2]

[Anonymous], 2001, MODERN THEORY CRITIC

[3] BLUME-EMERY-GRIFFITHS-POTTS MODEL IN 2 DIMENSIONS - PHASE-DIAGRAM AND CRITICAL PROPERTIES FROM A POSITION-SPACE RENORMALIZATION GROUP [J].

BERKER, AN ;

WORTIS, M .

PHYSICAL REVIEW B, 1976, 14 (11) :4946-4963

[4] ISING MODEL FOR LAMBDA TRANSITION AND PHASE SEPARATION IN HE-3-HE-4 MIXTURES [J].

BLUME, M ;

EMERGY, VJ ;

GRIFFITHS, RB .

PHYSICAL REVIEW A-GENERAL PHYSICS, 1971, 4 (03) :1071-+

[5] Application of Gutzwiller's variational method to the metal-insulator transition [J].

Brinkman, W. F. ;

Rice, T. M. .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (10) :4302-4304

[6] A GENERALIZED HUBBARD HAMILTONIAN - INFLUENCE OF TEMPERATURE AND FRACTALITY [J].

CANNAS, SA ;

TAMARIT, FA ;

TSALLIS, C .

SOLID STATE COMMUNICATIONS, 1991, 78 (08) :685-690

[7] CORRECTION [J].

CARIDE, AO .

PHYSICAL REVIEW LETTERS, 1983, 51 (07) :616-616

[8] CRITICALITY OF THE ANISOTROPIC QUANTUM HEISENBERG-MODEL ON A SELF-DUAL HIERARCHICAL LATTICE [J].

CARIDE, AO ;

TSALLIS, C ;

ZANETTE, SI .

PHYSICAL REVIEW LETTERS, 1983, 51 (03) :145-147

[9] NEW MODEL HAMILTONIAN FOR THE METAL-INSULATOR-TRANSITION [J].

CASTELLANI, C ;

DICASTRO, C ;

FEINBERG, D ;

RANNINGER, J .

PHYSICAL REVIEW LETTERS, 1979, 43 (26) :1957-1960

[10] ARE HIGH-TC SUPERCONDUCTORS DOPED MOTT INSULATORS [J].

CYROT, M .

SOLID STATE COMMUNICATIONS, 1987, 63 (11) :1015-1018

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