Stripes and spin incommensurabilities are favored by lattice anisotropies

被引：29

作者：

Becca, F ^{[1
]}

Capriotti, L

Sorella, S

机构：

[1] Univ Lausanne, Inst Phys Theor, CH-1015 Lausanne, Switzerland

[2] Univ Florence, Ist Nazl Fis Mat, I-50125 Florence, Italy

[3] Ist Nazl Fis Mat, I-34013 Trieste, Italy

[4] Scuola Int Super Studi Avanzati, I-34013 Trieste, Italy

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.87.167005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Structural distortions in cuprate materials give a natural origin for anisotropies in electron properties. We study a modified one-band t-J model in which we allow for different hoppings and antiferromagnetic couplings in the two spatial directions (t(x) not equal t(y) and J(x) not equal J(y)). Incommensurate peaks in the spin structure factor show up only in the presence of a lattice anisotropy, whereas charge correlations, indicating enhanced fluctuations at incommensurate wave vectors, are present but almost unaffected with respect to the isotropic case.

引用

页码：art. no. / 167005

页数：4

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