Vortex melting in polycrystalline YBa2Cu3O7 from O-17 NMR

被引：32
|
作者：
Reyes, AP
Tang, XP
Bachman, HN
Halperin, WP
Martindale, JA
Hammel, PC
机构：
[1] SCI & TECHNOL CTR SUPERCONDUCT,EVANSTON,IL 60208
[2] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545
来源：
PHYSICAL REVIEW B | 1997年 / 55卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.55.R14737
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Line-shape analysis of O-17 NMR spectra is used to probe vortex melting and dynamics in aligned powders of YBa2O3O7. Vortex transitions are identified by comparing their dynamics with the NMR time scale. Lineshape changes indicate a well-defined melting transition at a temperature, T-m. Below T-m there is a coexistence regime of solid and liquid vortices with a lower bound, T-g, which marks complete vortex freezing.
引用
收藏
页码：14737 / 14740
页数：4
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