IMAGES OF THE VORTEX CHAIN STATE IN UNTWINNED YBA2CU3O7-DELTA CRYSTALS

被引：111

作者：

GAMMEL, PL ^{[1
]}

BISHOP, DJ ^{[1
]}

RICE, JP ^{[1
]}

GINSBERG, DM ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.68.3343

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A vortex lattice consisting of a pinstripe pattern of vortex chains has been observed in untwinned YBa2Cu3O7-delta crystals. This state is present when the field is tilted away from the c axis, and is oriented with the chains confined to the plane defined by B and e. The chains arise from the attractive part of the vortex-vortex interaction in this geometry as described within the anisotropic London equations. For B > PHI-0/2-pi-2 the chains merge into an oriented vortex lattice. From the fitted value of lambda, we can conclude that the microscopic irreversibility temperature is T/T(c) approximately 0.92 for B approximately 20 G.

引用

页码：3343 / 3346

页数：4

共 25 条

[21] OBSERVATION OF A HEXATIC VORTEX GLASS IN FLUX LATTICES OF THE HIGH-TC SUPERCONDUCTOR BI2.1SR1.9CA0.9CU2O8+DELTA [J].