PHASE-DIAGRAM OF AN EXTENDED HUBBARD-MODEL WITH CORRELATED HOPPING AT HALF FILLING

被引：35

作者：

ALIGIA, AA ^{[1
]}

ARRACHEA, L ^{[1
]}

GAGLIANO, ER ^{[1
]}

机构：

[1] COMIS NACL ENERGIA ATOM,INST BALSEIRO,RA-8400 BARILOCHE,RIO NEGRO,ARGENTINA

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.51.13774

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study a generalized Hubbard model with on-site interaction U, nearest-neighbor repulsion V, and general correlated hopping under the condition that the number of doubly occupied sites is conserved. We find the exact ground state (GS) in arbitrary dimension in two wide regions of parameters. In one of them the GS is a Mott insulator (MI) and in the other it is a charge-density wave (CDW). The boundary of the MI and a large part of that of the CDW are determined exactly for relevant lattices. We study numerically the effect of relaxing the above-mentioned condition. © 1995 The American Physical Society.

引用

页码：13774 / 13777

页数：4

共 27 条

[1] EXACT SOLUTION OF A HUBBARD CHAIN WITH BOND-CHARGE INTERACTION [J].

ARRACHEA, L ;

ALIGIA, AA .

PHYSICAL REVIEW LETTERS, 1994, 73 (16) :2240-2243

[2] SUPERCONDUCTING CORRELATIONS IN HUBBARD CHAINS WITH CORRELATED HOPPING [J].

ARRACHEA, L ;

ALIGIA, AA ;

GAGLIANO, E ;

HALLBERG, K ;

BALSEIRO, C .

PHYSICAL REVIEW B, 1994, 50 (21) :16044-16051

[3] MISSING BOND-CHARGE REPULSION [J].

BAERISWYL, D ;

HORSCH, P ;

MAKI, K .

PHYSICAL REVIEW LETTERS, 1988, 60 (01) :70-70

[4] EXACT SOLUTION OF A ONE-DIMENSIONAL MODEL OF HOLE SUPERCONDUCTIVITY [J].

BARIEV, RZ ;

KLUMPER, A ;

SCHADSCHNEIDER, A ;

ZITTARTZ, J .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1993, 26 (05) :1249-1257

[5] MODELING ELECTRON-ELECTRON INTERACTIONS IN REDUCED-DIMENSIONAL MATERIALS - BOND-CHARGE COULOMB REPULSION AND DIMERIZATION IN PEIERLS-HUBBARD MODELS [J].

CAMPBELL, DK ;

GAMMEL, JT ;

LOH, EY .

PHYSICAL REVIEW B, 1990, 42 (01) :475-492

[6] PHASE-DIAGRAM OF THE EXTENDED HUBBARD-MODEL IN ONE SPATIAL DIMENSION [J].

CANNON, JW ;

FRADKIN, E .

PHYSICAL REVIEW B, 1990, 41 (13) :9435-9443

[7] GROUND-STATE PHASE-DIAGRAM OF THE ONE-DIMENSIONAL EXTENDED HUBBARD-MODEL [J].

CANNON, JW ;

SCALETTAR, RT ;

FRADKIN, E .

PHYSICAL REVIEW B, 1991, 44 (12) :5995-6001

[8] ETA-PAIRING AS A MECHANISM OF SUPERCONDUCTIVITY IN MODELS OF STRONGLY CORRELATED ELECTRONS [J].

DEBOER, J ;

KOREPIN, VE ;

SCHADSCHNEIDER, A .

PHYSICAL REVIEW LETTERS, 1995, 74 (05) :789-792

[9] ELECTRONIC MODEL FOR SUPERCONDUCTIVITY [J].

ESSLER, FHL ;

KOREPIN, VE ;

SCHOUTENS, K .

PHYSICAL REVIEW LETTERS, 1993, 70 (01) :73-76

[10] NEW EXACTLY SOLVABLE MODEL OF STRONGLY CORRELATED ELECTRONS MOTIVATED BY HIGH-TC SUPERCONDUCTIVITY [J].

ESSLER, FHL ;

KOREPIN, VE ;

SCHOUTENS, K .

PHYSICAL REVIEW LETTERS, 1992, 68 (19) :2960-2963

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