Mobility of solid vortex matter in "shaking" ac magnetic fields of variable amplitude

被引：0

作者：

Moreno, AJ ^{[1
]}

Valenzuela, SO ^{[1
]}

Pasquini, G ^{[1
]}

Bekeris, V ^{[1
]}

机构：

[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, Lab Bajas Temp, RA-1428 Buenos Aires, DF, Argentina

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 408卷

关键词：

memory effects; AC susceptibility; YBCO single crystals;

D O I：

10.1016/j.physc.2004.03.031

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The vortex solid in high temperature superconductors exhibits several regimes and dynamical behaviors. A temporarily symmetric magnetic ac field (e.g. sinusoidal, square, triangular) can increase the vortex lattice mobility and a temporarily asymmetric one (e.g. sawtooth) can decrease it. In this work, we study the effect on the mobility of the vortex solid as a function of the amplitude of an ac symmetric "shaking" field when it is applied to previously prepared high and low mobility configurations. This study was carried out in high quality twinned YBCO single crystals and vortex mobility was studied through ac susceptibility measurements. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：571 / 572

页数：2