INVESTIGATION ON THE CHARACTERISTICS OF THE HUBBARD-MODEL

被引：6

作者：

SU, G ^{[1
]}

GE, ML ^{[1
]}

机构：

[1] NANKAI UNIV, NANKAI INST MATH, DIV THEORET PHYS, TIANJIN 300071, PEOPLES R CHINA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 1991年 / 164卷 / 02期

关键词：

D O I：

10.1002/pssb.2221640222

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

It is shown that a simple Hubbard model obeys supersymmetry of quantum mechanics under proper conditions in the attractive and the repulsive cases. The internal SO4 symmetry of that Hubbard model is found to be spontaneously broken. By unitary transformations superconductivity is investigated for a t-J model within the eta-pairing framework, and some essential results are achieved for the superconducting state.

引用

页码：537 / 544

页数：8

共 19 条

[1] LARGE-N LIMIT OF THE HEISENBERG-HUBBARD MODEL - IMPLICATIONS FOR HIGH-TC SUPERCONDUCTORS [J].

AFFLECK, I ;

MARSTON, JB .

PHYSICAL REVIEW B, 1988, 37 (07) :3774-3777

[2]

AFFLECK I, 1989, PHYS REV B, V39, P1301

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

ANDERSON, PW .

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

[4] EXCITATIONS IN A NEARLY HALF-FILLED HUBBARD-MODEL WITH U=-INFINITY [J].

BARNES, SE .

PHYSICAL REVIEW B, 1989, 40 (01) :723-726

[5] THE RESONATING VALENCE BOND STATE AND HIGH-TC SUPERCONDUCTIVITY - A MEAN FIELD-THEORY [J].

BASKARAN, G ;

ZOU, Z ;

ANDERSON, PW .

SOLID STATE COMMUNICATIONS, 1987, 63 (11) :973-976

[6] STATISTICS AND FLUX IN 2 DIMENSIONS [J].

CANRIGHT, GS ;

GIRVIN, SM ;

BRASS, A .

PHYSICAL REVIEW LETTERS, 1989, 63 (20) :2291-2294

[7] A P-D HYBRIDIZATION PAIRING MODEL IN THE CUPRATES [J].

GANG, S .

COMMUNICATIONS IN THEORETICAL PHYSICS, 1989, 11 (04) :401-409

[8]

Gendenshtein L. E., 1985, Soviet Physics - Uspekhi, V28, P645, DOI 10.1070/PU1985v028n08ABEH003882

[9]

MATTIS DC, COMMUNICATION

[10] SUPERCONDUCTIVITY FROM ANTIFERROMAGNETIC EXCHANGE INTERACTIONS [J].

PARMENTER, RH .

PHYSICAL REVIEW LETTERS, 1987, 59 (08) :923-925

← 1 2 →