Incommensurate spin dynamics of high-Tc superconductor YBa2Cu3O7-δ

被引：0
|
作者：
Nishijima, T
Arai, M
Endoh, Y
Bennington, SM
Frost, CD
Eccleston, RS
Tomimoto, K
Tajima, S
Shiohara, Y
机构：
[1] KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 305, Japan
[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 980, Japan
[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[4] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 135, Japan
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 8-9期
关键词：
superconductors; neutron scattering; magnetic properties; superconductivity;
D O I：
10.1016/S0022-3697(99)00055-4
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
High energy inelastic neutron scattering measurements were performed in order to elucidate the wave vector and energy dependence of the spin dynamics in YBa2Cu3O6.7 (T-c = 68 K) and YBa2Cu3O7 (T-c = 93 K) by using pulsed neutron techniques. The incommensurability of spin dynamics was clearly observed for the under-doped compound. The peaks appear at (1/2 +/- delta,1/2,0) and (1/2,1/2 +/- delta,0) around the antiferromagnetic zone center of (1/2,1/2,0), The incommensurability delta is 0.11 +/- 0.01 (r.l.u,) for the lower energy region, and the incommensurate peaks seem to merge at about 39 meV. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1091 / 1094
页数：4
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