Vortex-antivortex annihilation in underdoped YBa2Cu3O6.354

被引：1
|
作者：
Gardner, BW [1 ]
Wynn, JC
Bonn, DA
Liang, RX
Hardy, WN
Moler, KA
机构：
[1] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA
[2] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 388卷
关键词：
vortex pinning; cuprate; scanning SQUID;
D O I：
10.1016/S0921-4534(02)02515-7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Locally applied magnetic fields can be used to create vortex-antivortex pairs in superconducting films and thin crystals. These pairs typically annihilate on some timescale which depends on temperature. We use a 21 mum diameter field coil integrated onto a scanning superconducting quantum interference device to create and observe vortex-antivortex pairs. We present measurements of the distribution of annihilation times as a function of temperature, which should allow us to determine the pinning forces for vortices in these highly underdoped samples of YBa2Cu3O6.354. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：725 / 726
页数：2
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