Phase diagrams from topological transitions: The Hubbard chain with correlated hopping

被引：43

作者：

Aligia, AA ^{[1
]}

Hallberg, K

Batista, CD

Ortiz, G

机构：

[1] Ctr Atom Bariloche, Comis Nacl Energia Atom, RA-8400 Bariloche, Rio Negro, Argentina

[2] Inst Balseiro, RA-8400 Bariloche, Rio Negro, Argentina

[3] Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.61.7883

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The quantum phase diagram of the Hubbard chain with correlated hopping is accurately determined through jumps in ir in the charge and spin Berry phases. The nature of each thermodynamic phase, and the existence of charge and spin gaps, is confirmed by calculating correlation functions and other fundamental quantities using numerical methods and symmetry arguments. Remarkably, we find striking similarities between the stable phases for moderate on-site Coulomb repulsion: spin Peierls, spin-density wave and triplet superconductor, and those measured in Bechgaard salts (TMTSF)(2)X.

引用

页码：7883 / 7886

页数：4

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