VORTEX DYNAMICS BELOW THE FLUX-LATTICE MELTING TRANSITION IN YBA2CU2O7-DELTA

被引：68

作者：

SAFAR, H ^{[1
]}

GAMMEL, PL ^{[1
]}

HUSE, DA ^{[1
]}

ALERS, GB ^{[1
]}

BISHOP, DJ ^{[1
]}

LEE, WC ^{[1
]}

GIAPINTZAKIS, J ^{[1
]}

GINSBERG, DM ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.52.6211

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the critical current, differential resistance, and voltage noise below the vortex-lattice melting transition in clean, untwinned YBa2CU3O7-delta crystals. The differential resistance at dc current bias much greater than J(c) shows a sharp feature at the melting transition accompanied by a rapid drop in the voltage noise, demonstrating that the melting transition is insensitive to the static pinning potential. In the solid phase, the measurements all show a marked change from the low-field, pinned lattice to the high-field vortex-glass contiguous with the tricritical point in this sample.

引用

页码：6211 / 6214

页数：4

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