Antiferromagnetism, stripes, and superconductivity in the t-J model with Coulomb interaction

被引：20

作者：

Han, J ^{[1
]}

Wang, QH

Lee, DH

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Nanjing Univ, Inst Solid State Phys, Dept Phys, Nanjing 210093, Peoples R China

[3] Nanjing Univ, Inst Solid State Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2001年 / 15卷 / 08期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1142/S021797920100468X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study mean-field phases of the t-J model with long-range Coulomb interaction. In the order of increasing doping density we find a classical antiferromagnet, charge and spin stripes, and a uniform d-wave superconductor, at the realistic doping parameters. Both in-phase and anti-phase stripes exist as metastable configurations, but the in-phase stripes have a slightly lower energy. The dependence of the stripe width and the inter-stripe spacing on the doping is examined. Effects of fluctuations around the mean-field states are discussed.

引用

收藏

页码：1117 / 1126

页数：10

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