O-17, CU-63 AND TL-205 NMR-STUDY OF OVER-DOPED TL2BA2CUOY

被引：7

作者：

KAMBE, S

YOSHINARI, Y

YASUOKA, H

HAYASHI, A

UEDA, Y

机构：

[1] ISSP, The University of Tokyo, Tokyo, 106, Roppongi

来源：

PHYSICA C | 1991年 / 185卷 / 185-89期

关键词：

544 Copper and Alloys - 547 Minor; Precious and Rare Earth Metals and Alloys - 701 Electricity and Magnetism - 708 Electric and Magnetic Materials - 812 Ceramics; Refractories and Glass - 931 Classical Physics; Quantum Theory; Relativity;

D O I：

10.1016/0921-4534(91)91814-K

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the temperature dependence of 1/T1 at the O, Cu T1 sites of Tl2Ba2CuOy. 1/T1 at the T1 sites does not follow the Korringa law for over-doped and superconducting specimens (4.2-300K). On the other hand, 1/T1 at the O and Cu sites appeared to be the Korringa type (T1xT = const) up to 200K for the over-doped specimen. From a comparison of the magnitude of 1/T1 at the O and Cu sites, we concluded that the antiferromagnetic spin fluctuation are playing essential role to the spin-dynamics at Cu site even in the over-doped state.

引用

页码：1181 / 1182

页数：2