Superconductivity in the Repulsive Hubbard Model

被引：12
|
作者：
Baeriswyl, D. [1 ]
机构：
[1] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2011年 / 24卷 / 03期
关键词：
Superconductivity; Hubbard model; RENORMALIZATION-GROUP; CORRELATED ELECTRONS; PHYSICS;
D O I：
10.1007/s10948-010-1100-6
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The two-dimensional repulsive Hubbard model has been investigated by a variety of methods, from small to large U. Superconductivity with d-wave symmetry is consistently found close to half filling. After a brief review of the various methods a variational many-electron state is discussed in more detail. This trial state is a natural extension of the Gutzwiller ansatz and provides a substantial improvement thereof.
引用
收藏
页码：1157 / 1159
页数：3
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