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

页码：1091 / 1094

页数：4

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