Tilt of pancake vortex stacks in layered superconductors in the crossing lattice regime

被引：16

作者：

Grigorenko, AN ^{[1
]}

Bending, SJ

Grigorieva, IV

Koshelev, AE

Tamegai, T

Ooi, S

机构：

[1] Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England

[2] Univ Bath, Sch Phys, Bath BA2 7AY, Avon, England

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

[4] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.94.067001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study crossing vortices in strongly anisotropic Bi2Sr2CaCu2O8+delta single crystals. Using scanning Hall probe microscopy and Bitter decoration techniques, we find an asymmetry of magnetic field profiles produced by pancake vortices (PVs), which are interacting with Josephson vortices (JVs), near the surface of the crystal. We attribute the observed asymmetry to a substantial tilt (14-18 degrees) of PV stacks, which is produced by the torque due to the surface currents and JVs. We calculate the tilt angle and obtain agreement with experimental data when the irreversible in-plane magnetization is included. A further refinement to the model is considered which accounts for a reduction in the PV stack line tension near the sample surface.

引用

页码：1 / 4

页数：4

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