NATURE OF THE IRREVERSIBILITY LINE IN BI2SR2CACU2O8

Authors
ZELDOV E MAJER D KONCZYKOWSKI M LRKIN AI VINOKUR VM GESHKENBEIN VB CHIKUMOTO N SHTRIKMAN H
Citation
E. Zeldov et al., NATURE OF THE IRREVERSIBILITY LINE IN BI2SR2CACU2O8, Europhysics letters, 30(6), 1995, pp. 367-372
Citations number
30
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
30
Issue
6
Year of publication
1995
Pages
367 - 372
Database
ISI
SICI code
0295-5075(1995)30:6<367:NOTILI>2.0.ZU;2-G
Abstract
Local vortex dynamics in Bi2Sr2CaCu2O8 single crystals was studied usi ng novel microscopic GaAs/AlGaAs Hall-sensor arrays. The irreversibili ty line (IL) is found to exist in the absence of bulk pinning. At high temperatures the IL is due to geometrical barriers whereas at interme diate temperatures the irreversible behavior is determined by surface barriers. Bulk pinning governs the IL only at T < 22 K.