Nonequilibrium dynamics in type-II superconductors with inhomogeneous vortex pinning

Authors

X B Xu, Nanjing University, China
H Fangohr, University of Southampton
X.N Xu, Nanjing University, China
M Gu, Nanjing University, China
Shichao Ding, University of WollongongFollow
Dongqi Shi, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

31515

Publication Details

Xu, XB, Fangohr, H, Xu, XN, Gu, M, Ding, SY, Shi, DQ & Dou, SX (2009), Nonequilibrium dynamics in type-II superconductors with inhomogeneous vortex pinning, Physica C: Superconductivity and its Applications, 469(22), pp. 2008-2011.

Abstract

We study numerically the dynamics relating to negative vortex motion in inhomogeneous pinning systems. We show that this dynamical phenomenon results from the internal field effect produced by the growing local barriers with decreasing temperature. We find that the negative motion is characterized by a peak of negative voltage or resistance in resistance–temperature transport measurements. We also demonstrate that the time window to observe the negative motion is determined by the magnitude of driving force in addition to the temperature scanning rate.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205