VORTEX MELTING IN POLYCRYSTALLINE YBA2CU3O7 FROM O-17 NMR

Authors
REYES AP TANG XP BACHMAN HN HALPERIN WP MARTINDALE JA HAMMEL PC
Citation
Ap. Reyes et al., VORTEX MELTING IN POLYCRYSTALLINE YBA2CU3O7 FROM O-17 NMR, Physical review. B, Condensed matter, 55(22), 1997, pp. 14737-14740
Citations number
32
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
22
Year of publication
1997
Pages
14737 - 14740
Database
ISI
SICI code
0163-1829(1997)55:22<14737:VMIPYF>2.0.ZU;2-H
Abstract
Line-shape analysis of O-17 NMR spectra is used to probe vortex meltin g and dynamics in aligned powders of YBa2O3O7. Vortex transitions are identified by comparing their dynamics with the NMR time scale. Linesh ape changes indicate a well-defined melting transition at a temperatur e, T-m. Below T-m there is a coexistence regime of solid and liquid vo rtices with a lower bound, T-g, which marks complete vortex freezing.