Scanning Hall probe microscopy of flux penetration into a superconducting YBa2Cu3O7-δ thin film strip

被引：14

作者：

Grigorenko, AN ^{[1
]}

Bending, SJ

Gregory, JK

Humphreys, RG

机构：

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

[2] DERA, Malvern WR14 3PS, Worcs, England

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 11期

关键词：

D O I：

10.1063/1.1352041

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A high-resolution scanning Hall probe microscope has been used to measure flux profiles across one "wire" of a long YBa2Cu3O7-delta thin-film meander line as a function of both transport current density and applied magnetic field. Flux bundle penetration due to an applied current or magnetic field is demonstrated to occur at the same regions at the edge of the strip. A correlation between the surface topography of the meander line edges and the regions of penetration has been established. Penetrating flux profiles at low temperatures are in qualitative agreement with theories of dynamical instability of the order parameter. (C) 2001 American Institute of Physics.

引用

页码：1586 / 1588

页数：3

共 14 条

[1] Nucleation and growth of the normal phase in thin superconducting strips [J].