A GENERALIZED HUBBARD HAMILTONIAN - INFLUENCE OF TEMPERATURE AND FRACTALITY

被引：7

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：

SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 08期

关键词：

D O I：

10.1016/0038-1098(91)90845-M

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We consider a generalised Hubbard Hamiltonian which is invariant under a Real Space Renormalisation Group. Within the present approximation, the Bravais lattice is replaced by a diamond-like hierarchical lattice. We calculate the phase diagram associated with the half-filled band Hubbard Hamiltonian in d = 1, 2 and 3, in the full range of the dimensionless intra-atomic interaction U and hopping t parameters. The influence of the hierarchical lattice fractality is analysed as well.

引用

页码：685 / 690

页数：6

共 31 条

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

ANDERSON, PW .

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

[2] 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-+

[3] 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

[4] CORRECTION [J].

CARIDE, AO .

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

[5] 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

[6] 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

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

CYROT, M .

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

[8] ON HIGH-TC SUPERCONDUCTIVITY IN LA2CUO4 TYPE COMPOUNDS [J].

CYROT, M .

SOLID STATE COMMUNICATIONS, 1987, 62 (12) :821-823

[9] THEORY OF MOTT TRANSITION - APPLICATIONS TO TRANSITION-METAL OXIDES [J].

CYROT, M .

JOURNAL DE PHYSIQUE, 1972, 33 (01) :125-&

[10] RANDOM ONE-BODY APPROXIMATION TO THE HUBBARD-MODEL .3. APPLICATION TO HIGHER-DIMENSIONAL LATTICES [J].

DEMARCO, RR ;

ECONOMOU, EN ;

WHITE, CT .

PHYSICAL REVIEW B, 1978, 18 (08) :3968-3975

← 1 2 3 4 →