Evolution of the vortex phase diagram in YBa2Cu3O7-delta with random pointdisorder

Authors
Paulius, LM Kwok, WK Olsson, RJ Petrean, AM Tobos, V Fendrich, JA Crabtree, GW Burns, CA Ferguson, S
Citation
Lm. Paulius et al., Evolution of the vortex phase diagram in YBa2Cu3O7-delta with random pointdisorder, PHYS REV B, 61(18), 2000, pp. 11910-11913
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
10980121 → ACNP
Volume
61
Issue
18
Year of publication
2000
Pages
11910 - 11913
Database
ISI
SICI code
1098-0121(20000501)61:18<11910:EOTVPD>2.0.ZU;2-W
Abstract
We demonstrate the gradual evolution of the first-order vortex melting tran sition into a continuous transition with the systematic addition of point d isorder induced by proton irradiation. The evolution occurs via the decreas e of the upper critical point and the increase of the lower critical point. The collapse of the first-order melting transition occurs when the two cri tical points merge. We compare these results with the effects of electron i rradiation on the first-order transition.