NEW RESISTANCE ANOMALY IN THE SUPERCONDUCTING FLUCTUATION REGION OF DISORDERED CU-ZR ALLOYS WITH DILUTE MAGNETIC-IMPURITIES

被引：40

作者：

LINDQVIST, P ^{[1
]}

NORDSTROM, A ^{[1
]}

RAPP, O ^{[1
]}

机构：

[1] ROYAL INST TECHNOL,DEPT SOLID STATE PHYS,S-10044 STOCKHOLM 70,SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.64.2941

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In disordered superconducting Cu-Zr alloys with dilute magnetic impurities, we have observed a new type of resistance anomaly which gives rise to strongly increased scattering of conduction electrons in a narrow temperature range above Tc and appears to be due to interaction between superconducting fluctuations and spin. For a given level of impurities this phenomenon is peaked around Cu50Zr50, but is observable from 36 to 60 at.% Zr. When the Cr impurity concentration is varied in Cu50Zr50, a resistance peak can be observed for 100600 ppm Cr with a maximum peak height of about 6% of the measured resistance. The effect is destroyed by a magnetic field of some tenths of a tesla. © 1990 The American Physical Society.

引用

页码：2941 / 2944

页数：4