New resistance anomaly in superconducting Zn-doped Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) single crystals

We have measured the magnetoresistance of Zn-doped superconducting Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) single crystals and found that for a small driving current ( less than or equal to 20mA) the resistance displays a very sharp rise just below Tc before the zero-resistance state is reached. The r...

Full description

Saved in:
Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2000-01, Vol.341-348 (III), p.1921-1922
Main Authors: Wang, Wenhu, Zhou, Yuqin, Chen, Zhaojia, Zheng, Ping, Wang, Nanlin, Jin, Duo
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have measured the magnetoresistance of Zn-doped superconducting Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) single crystals and found that for a small driving current ( less than or equal to 20mA) the resistance displays a very sharp rise just below Tc before the zero-resistance state is reached. The resistance anomaly disappeared when a magnetic field ( approximately 100Gs) or a large current was applied. We proposed that the resistance peak is a quasireentrant behavior due to the superconducting phase inhomogeneous distribution resulting from the Zn doped.
ISSN:0921-4534