Antiferromagnetic ordering in a 90 K copper oxide superconductor

被引：44

作者：

Hodges, JA ^{[1
]}

Sidis, Y

Bourges, P

Mirebeau, I

Hennion, M

Chaud, X

机构：

[1] CE Saclay, DRECAM SPEC, F-91191 Gif Sur Yvette, France

[2] CE Saclay, Lab Leon Brillouin, CEA CNRS, F-91191 Gif Sur Yvette, France

[3] CNRS, CRETA, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.66.020501

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using elastic neutron scattering, we evidence a commensurate antiferromagnetic Cu(2) order (AF) (T(N)similar to330 K, musimilar to0.14 mu(B)) in the superconducting (SC) high-T-c cuprate YBa2(Cu1-yCoy)(3)O7+delta (y=0.013,T-c=93 K). We find that the spin excitation spectrum is still dominated by a magnetic resonance peak at 41 meV as in the Co-free system, but with a reduced spectral weight. The substitution of Co leads to a state where AF and SC cohabit at a microscopic scale, without any strong interference.

引用

页码：205011 / 205014

页数：4

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