POSITRON-ANNIHILATION STUDIES OF THE IRON-SUBSTITUTED OXIDE SUPERCONDUCTOR YBA2(CU1-XFEX)3O7-Y

被引：9

作者：

ISHIBASHI, S

SUENAGA, K

YAMAMOTO, R

DOYAMA, M

MATSUMOTO, T

机构：

[1] NISHI TOKYO UNIV,DEPT MAT ENGN,YAMANASHI,JAPAN

[2] NATL RES INST MET,MEGURO KU,TOKYO 153,JAPAN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 15期

关键词：

D O I：

10.1088/0953-8984/2/15/025

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Positron lifetime measurements were performed on YBa2(Cu 1-xFex)3O7-y with x=0, 0.01, 0.02, 0.03, 0.06, 0.09 and 0.12 as a function of temperature between 20 K and room temperature. The positron mean lifetime and its thermal behaviour strongly depend on the iron concentration. A plausible model is proposed, in which the observed results are explained in terms of positron weak localisation due to copper-oxygen chain disordering.

引用

页码：3691 / 3696

页数：6

共 36 条

[31] EFFECT OF MICROSTRUCTURE ON POSITRON-ANNIHILATION PARAMETERS IN YBA2CU3O7 [J].