THE ETA-PAIRING GROUND-STATES IN THE NEGATIVE-U HUBBARD-MODEL ARE SUPERSOLID

被引：9

作者：

TIAN, GS ^{[1
]}

机构：

[1] ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA

来源：

PHYSICS LETTERS A | 1994年 / 192卷 / 2-4期

关键词：

D O I：

10.1016/0375-9601(94)90258-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Since Yang [Phys. Rev. Lett 63 (1989) 21441 proposed the possible existence of the eta-pairing off-diagonal long-range order (ODLRO) in the ground states of the negative-U Hubbard model, this problem has been studied by many physicists. In this article, based on our previous work, we shall rigorously show that all the ground states, which have the eta-pairing ODLRO, are actually supersolid rather than superfluid as one expected before.

引用

页码：278 / 284

页数：7

共 50 条

[31] COMPOSITE BOSONS AND QUANTUM COHERENT EFFECTS IN THE NEGATIVE-U HUBBARD-MODEL [J].

KOPEC, TK .

PHYSICA B, 1994, 194 :1393-1394

[32] PAIRING AND CHARGE-DENSITY CORRELATIONS IN THE 3-DIMENSIONAL NEGATIVE-U HUBBARD-MODEL ON THE FCC LATTICE [J].

CHEN, CF .

PHYSICAL REVIEW B, 1993, 47 (05) :2861-2865

[33] A Class of Collective Excitations of the Hubbard Model: eta Excitation of the Negative-U Model [J].

Demler, E. ;

Zhang, S.-C. ;

Bulut, N. ;

Scalapino, D. J. .

International Journal of Modern Physics B, 10 (17)

[34] A class of collective excitations of the Hubbard model: eta excitation of the negative-U model [J].

Demler, E ;

Zhang, SC ;

Bulut, N ;

Scalapino, DJ .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1996, 10 (17) :2137-2166

[35] PHASE-DIAGRAM OF THE TWO-DIMENSIONAL NEGATIVE-U HUBBARD-MODEL [J].

SCALETTAR, RT ;

LOH, EY ;

GUBERNATIS, JE ;

MOREO, A ;

WHITE, SR ;

SCALAPINO, DJ ;

SUGAR, RL ;

DAGOTTO, E .

PHYSICAL REVIEW LETTERS, 1989, 62 (12) :1407-1410

[36] SUPERCONDUCTIVITY IN THE FCC NEGATIVE-U HUBBARD-MODEL - FROM 2 TO 3 DIMENSIONS [J].

CHEN, CF .

PHYSICAL REVIEW B, 1993, 48 (09) :6683-6686

[37] Random negative-U hubbard model [J].

Litak, G ;

Györffy, BL .

PHYSICAL REVIEW B, 2000, 62 (10) :6629-6637

[38] ELECTRON PAIRING IN THE NEGATIVE-U HUBBARD NARROW ENERGY-BAND MODEL [J].

JAIN, KP ;

RAMAKUMAR, R ;

CHANCEY, CC .

PHYSICA C, 1990, 168 (3-4) :297-302

[39] CONTINUUM FIELD APPROXIMATION FOR THE ETA-PAIRING MECHANISM OF A HUBBARD-MODEL WITHIN THE FRAMEWORK OF A MEAN-FIELD THEORY [J].

SU, G .

COMMUNICATIONS IN THEORETICAL PHYSICS, 1990, 14 (02) :213-216

[40] HARTREE THEORY FOR THE NEGATIVE-U EXTENDED HUBBARD-MODEL .2. FINITE TEMPERATURE [J].

ROBASZKIEWICZ, S ;

MICNAS, R ;

CHAO, KA .

PHYSICAL REVIEW B, 1982, 26 (07) :3915-3922

← 1 2 3 4 5 →