SMALL-POLARON THEORY OF DOPED ANTIFERROMAGNETS

被引：72

作者：

AUERBACH, A

LARSON, BE

机构：

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.66.2262

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spin-hole coherent-state path integral is used to generate a systematic large-spin expansion of the t-J model on the square lattice. The single hole's classical energy is minimized by small polarons with short-ranged interactions. Intersublattice hopping of polarons is forbidden by a tunneling selection rule. We derive the low-energy Lagrangian which reduces to the model of Wiegmann, Wen, Shankar, and Lee of Neel-gauge-field-induced superconductivity.

引用

页码：2262 / 2265

页数：4

共 26 条

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