Neutron scattering from a collective spin fluctuation mode in a CuO2 bilayer

被引：122

作者：

Bulut, N

Scalapino, DJ

机构：

[1] Department of Physics, University of California, Santa Barbara

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.53.5149

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A resonance in the magnetic scattering of neutrons from superconducting YBa2Cu3O7 has been observed at a momentum transfer of (pi/a, pi/a, pi/(c) over bar), where a is the in-plane Cu spacing and (c) over bar is the Cu-Cu bilayer spacing. Here we construct a model of a CuO2 bilayer and show that a collective S=1, antiferromagnetic excitation with q=(pi/a, pi/a, pi/(c) over bar) arises if the gap has d(x2-y2) symmetry.

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页码：5149 / 5152

页数：4

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