EVIDENCE FOR FLUX-LATTICE MELTING AND A DIMENSIONAL CROSSOVER IN SINGLE-CRYSTAL BI2.15SR1.85CACU2O8+DELTA FROM MUON SPIN ROTATION STUDIES

Authors
LEE SL ZIMMERMANN P KELLER H WARDEN M SAVIC IM SCHAUWECKER R ZECH D CUBITT R FORGAN EM KES PH LI TW MENOVSKY AA TARNAWSKI Z
Citation
Sl. Lee et al., EVIDENCE FOR FLUX-LATTICE MELTING AND A DIMENSIONAL CROSSOVER IN SINGLE-CRYSTAL BI2.15SR1.85CACU2O8+DELTA FROM MUON SPIN ROTATION STUDIES, Physical review letters, 71(23), 1993, pp. 3862-3865
Citations number
30
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
23
Year of publication
1993
Pages
3862 - 3865
Database
ISI
SICI code
0031-9007(1993)71:23<3862:EFFMAA>2.0.ZU;2-N
Abstract
The microscopic magnetic field distribution in the mixed state of sing le-crystal Bi2.15Sr1.85CaCu2O8+delta has been measured using the muon spin rotation technique. A study of the line shapes as a function of t emperature and magnetic field gives evidence for an abrupt change of f lux-lattice structure which is attributed to the presence of a flux-la ttice melting line in the B-T phase diagram. In addition, the data sug gest the existence of a crossover field above which the flux structure is more 2D in nature.