Resonant spin excitation in an overdoped high temperature superconductor

被引：155

作者：

He, H ^{[1
]}

Sidis, Y

Bourges, P

Gu, GD

Ivanov, A

Koshizuka, N

Liang, B

Lin, CT

Regnault, LP

Schoenherr, E

Keimer, B

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

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

[3] Univ New S Wales, Sch Phys, Dept Adv Elect Mat, Sydney, NSW 2052, Australia

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[5] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 135, Japan

[6] CEA Grenoble, Dept Rech Fondamentale Mat Condenee, F-38054 Grenoble 9, France

[7] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.86.1610

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An inelastic neutron scattering study of overdoped Bi2Sr2CaCu2O8+delta (T-c = 83 K) has revealed a. resonant spin excitation in the superconducting state. The mode energy is E-res = 38.0 meV, significantly lower than in optimally doped Bi2Sr2CaCu2O8+delta (T-c = 91 K, E-res = 42.4 meV. This observation. which indicates a constant ratio E-res/k(B)T(c) similar to 5.4, helps resolve a long-standing controversy about the origin of the resonant spin excitation in high temperature superconductors.

引用

页码：1610 / 1613

页数：4

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