Coupling to spin fluctuations from conductivity scattering rates

被引：63

作者：

Schachinger, E ^{[1
]}

Carbotte, JP

机构：

[1] Graz Univ Technol, Inst Theoret Phys, A-8010 Graz, Austria

[2] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.62.9054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A recent analysis of optical conductivity data which has provided evidence for coupling of the charge carriers to the 41-meV spin resonance seen in the superconducting state of optimally doped YBa2Cu3O6.95 (Y123) is extended to other systems. We find that the corresponding spin resonance is considerably broader in Tl2Sr2CuO8+delta (Tl2201) and YBa2Cu4O8 (Y124) than it is in Bi2Sr2CaCu2O8+delta (Bi2212) and there is no resonance in overdoped Tl2201 with T-c=23 K. The effective charge-spin spectral density is temperature dependent and contains feedback effects that further stabilize superconductivity as T is reduced.

引用

页码：9054 / 9058

页数：5

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