Magnetic collective mode dispersion in high-temperature superconductors

被引：79

作者：

Norman, MR ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.63.092509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent neutron-scattering experiments in the superconducting state of YBa2Cu3O6+x have been interpreted in terms of a magnetic collective mode whose dispersion relative to the commensurate wave vector has a curvature opposite in sign to a conventional magnon dispersion. The purpose of this article is to demonstrate that simple linear-response calculations are in support of a collective-mode interpretation, and to explain why the dispersion has the curvature it does.

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