Visualization of interacting crossing vortex lattices in the presence of quenched disorder

被引：23

作者：

Grigorenko, AN

Bending, SJ

Koshelev, AE

Clem, JR

Tamegai, T

Ooi, S

机构：

[1] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[3] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[4] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[5] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138627, Japan

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.89.217003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have imaged interacting crossing pancake vortex (PV) and Josephson vortex (JV) lattices in highly anisotropic Bi2Sr2CaCu2O8+delta single crystals under tilted magnetic fields. The dependence of vortex structures on in-plane field is in good quantitative agreement with theoretical predictions, yielding an almost temperature-independent anisotropy parameter of gamma = 640 +/- 25. We directly confirm that the PV/JV attraction arises from small PV displacements in the presence of JV supercurrents and demonstrate how the existence of quenched disorder leads to indirect JV pinning and dynamic vortex fragmentation.

引用

页数：4

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