PROPERTIES OF A VANHOVE SUPERCONDUCTOR

被引：3

作者：

MARKIEWICZ, RS ^{[1
]}

机构：

[1] NORTHEASTERN UNIV,BARNETT INST,BOSTON,MA 02115

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)90899-A

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Near a two-dimensional van Hove singularity (vHs), the electronic density-of-states (dos) has a logarithmic singularity which profoundly modifies the electronic properties, and can lead to high-T(c) superconductivity. Whereas the normal state properties in the presence of a vHs are very complicated, the superconducting properties can be described very simply. Detailed calculations have been carried out for the superconducting gap and critical temperature of a van-Hove superconductor, incorporating interlayer coupling, strong coupling, and depairing effects due to real phonon scattering and spin scattering. Satisfactory agreement is found with experimental data on the isotope effect, spin-lattice relaxation time, and magnetic penetration depth.

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页码：1545 / 1546

页数：2

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