SUPERCONDUCTIVITY FROM CORRELATED HOPPING

被引：11

作者：

BATISTA, CD ^{[1
]}

LEMA, F ^{[1
]}

ALIGIA, AA ^{[1
]}

机构：

[1] INST BALSEIRO,RA-8400 BARILOCHE,RIO NEGRO,ARGENTINA

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.52.6223

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider a chain described by a next-nearest-neighbor hopping combined with a nearest-neighbor spin hip. In two dimensions this three-body term arises from a mapping of the three-band Hubbard model for CuO2 planes to a generalized t-J model and for large O-O hopping favors resonance-valence-bond superconductivity of predominantly d-wave symmetry. Solving the groundstate and low-energy excitations by analytical and numerical methods we find that the chain is a Luther-Emery liquid with correlation exponent K(r)ho = (2 - n)(2)/2, where n is the particle density.

引用

页码：6223 / 6226

页数：4

共 35 条

[1] SYSTEMATIC DERIVATION OF A GENERALIZED T-J MODEL [J].

ALIGIA, AA ;

SIMON, ME ;

BATISTA, CD .

PHYSICAL REVIEW B, 1994, 49 (18) :13061-13064

[2] PHASE-DIAGRAM OF AN EXTENDED HUBBARD-MODEL WITH CORRELATED HOPPING AT HALF FILLING [J].

ALIGIA, AA ;

ARRACHEA, L ;

GAGLIANO, ER .

PHYSICAL REVIEW B, 1995, 51 (19) :13774-13777

[3] EFFECT OF THE 3-SITE HOPPING TERM ON THE T-J MODEL [J].

AMMON, B ;

TROYER, M ;

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PHYSICAL REVIEW B, 1995, 52 (01) :629-636

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

ARRACHEA, L ;

ALIGIA, AA .

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

[5] 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

[6] VALIDITY OF THE T-J MODEL (VOL B48, PG 4212, 1993) [J].

BATISTA, CD ;

ALIGIA, AA .

PHYSICAL REVIEW B, 1994, 49 (09) :6436-6436

[7] VALIDITY OF THE T-J MODEL [J].

BATISTA, CD ;

ALIGIA, AA .

PHYSICAL REVIEW B, 1993, 48 (06) :4212-4215

[8] EFFECT OF THE CU-CU SUPEREXCHANGE ON THE STABILITY OF ZHANG-RICE SINGLETS [J].

BATISTA, CD ;

ALIGIA, AA .

PHYSICAL REVIEW B, 1994, 49 (22) :16048-16051

[9]

BATISTA CD, UNPUB

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PHYSICAL REVIEW LETTERS, 1986, 56 (07) :742-745

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