PROPERTIES OF THE D(X2-Y2) GAP IN THE 2-DIMENSIONAL HUBBARD-MODEL

被引：4

作者：

MONTHOUX, P ^{[1
]}

SCALAPINO, DJ ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106

来源：

PHYSICA B | 1994年 / 199卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0921-4526(94)91816-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The superconducting gap of a doped two-dimensional Hubbard model is calculated using a conserving spin-fluctuation approximation. The momentum dependence of the gap is found to be close to the simple dx2-y2 form cos p(x) - cos p(y). The amplitude of the gap at the antinode rises rapidly below T(c) and reaches a 2DELTA(0)/kT(c) value of order 10. This reflects the suppression of pair breaking as the gap opens, along with self-energy feedback effects which act to maintain the strength of the interaction.

引用

页码：294 / 297

页数：4

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