New resistance anomaly in superconducting Zn-doped Bi2Sr2CaCu2O8 single crystals

Citation
Wh. Wang et al., New resistance anomaly in superconducting Zn-doped Bi2Sr2CaCu2O8 single crystals, PHYSICA C, 341, 2000, pp. 1921-1922
Citations number
3
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
0921-4534 → ACNP
Volume
341
Year of publication
2000
Part
3
Pages
1921 - 1922
Database
ISI
SICI code
0921-4534(200011)341:<1921:NRAISZ>2.0.ZU;2-2
Abstract
We have measured the magnetoresistance of Zn-doped superconducting Bi2Sr2Ca Cu2O8 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 disappe ared when a magnetic field (approximate to 100Gs) or a large current was ap plied. We proposed that the resistance peak is a quasireentrant behavior du e to the superconducting phase inhomogeneous distribution resulting from th e Zn doped.