SURFACE CURRENTS AND BULK PINNING IN BI2CR2CACU2O8

Authors
MAJER D ZELDOV E KONCZYKOWSKI M GESHKENBEIN VB LARKIN AI BURLACHKOV L VINOKUR VM CHIKUMOTO N
Citation
D. Majer et al., SURFACE CURRENTS AND BULK PINNING IN BI2CR2CACU2O8, Physica. C, Superconductivity, 235, 1994, pp. 2765-2766
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
4
Pages
2765 - 2766
Database
ISI
SICI code
0921-4534(1994)235:<2765:SCABPI>2.0.ZU;2-U
Abstract
The mechanisms giving rise to the irreversibility line (IL) in the pha se diagram of Bi2Sr2CaCu2O8 and the mechanism behind the second maximu m in the magnetization loops were determined using a novel Hall-sensor array. The IL is caused by bulk pinning at lower temperatures and by irreversible shielding currents above 22K. The second maximum is cause d by vortex lattice melting, taking place at the same local magnetic i nduction B-m throughout the sample.