Condensation energy in the spin-fermion model for cuprates

被引：8

作者：

Abanov, A ^{[1
]}

Chubukov, AV ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.62.R787

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We compute the condensation energy in the spin-fermion model using Scalapino-White relation between the condensation energy and the change in the dynamical structure factor in the normal and the superconducting states. We show that for parameters relevant to cuprates, the extra low-frequency spectral weight associated with the resonance peak in the dynamical structure factor in a superconductor is not compensated up to energies similar to J which are much larger than the superconducting gap Delta. We argue that in this situation, the condensation energy is large and well accounts for the data for cuprates.

引用

收藏

页码：R787 / R790

页数：4

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