PAIRING INSTABILITIES IN THE 2-DIMENSIONAL HUBBARD-MODEL

被引：38
|
作者：
CHUBUKOV, AV [1 ]
LU, JP [1 ]
机构：
[1] PL KAPITZA PHYS PROBLEMS INST,117334 MOSCOW,USSR
来源：
PHYSICAL REVIEW B | 1992年 / 46卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.46.11163
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We show that for low and moderate fillings the ground state of the two-dimensional Hubbard model with positive-U and nearest-neighbor hopping is unstable with respect to d-wave pairing with d(xy) symmetry of the gap wave function: DELTA is similar to sink(x),sink(y). The inclusion of the next-neighbor hopping may either suppress the pairing or change the symmetry of the superconducting state.
引用
收藏
页码：11163 / 11166
页数：4
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