Polarizability and single-particle spectra of two-dimensional s- and d-wave superconductors

被引：15

作者：

Kee, HY ^{[1
]}

Varma, CM

机构：

[1] Rutgers State Univ, Dept Phys, Piscataway, NJ 08855 USA

[2] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.58.15035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present analytic results for the polarizabilities chi(Q,omega), in the charge, spin, and current channels for two-dimensional s- and d-wave superconductors for large momentum transfer. A collective mode in the charge channel is predicted to exist for extremum vectors of the Fermi surface with energy below twice the maximum superconducting gap. Such modes are directly observable through inelastic x-ray or electron scattering. Scattering of single particle excitations by these collective modes leads to several unusual features in the single particle spectrum in the superconducting state which are seen in angle resolved photoemission experiments. [S0163-1829(98)03845-4].

引用

页码：15035 / 15044

页数：10

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