Pinning time statistics for vortex lines in disordered environments

Autor:	Dobramysl, Ulrich, Pleimling, Michel, Tauber, Uwe C.
Rok vydání:	2014
Předmět:	Condensed Matter - Statistical Mechanics Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. E 90, 062108 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevE.90.062108
Popis:	We study the pinning dynamics of magnetic flux (vortex) lines in a disordered type-II superconductor. Using numerical simulations of a directed elastic line model, we extract the pinning time distributions of vortex line segments. We compare different model implementations for the disorder in the surrounding medium: discrete, localized pinning potential wells that are either attractive and repulsive or purely attractive, and whose strengths are drawn from a Gaussian distribution; as well as continuous Gaussian random potential landscapes. We find that both schemes yield power law distributions in the pinned phase as predicted by extreme-event statistics, yet they differ significantly in their effective scaling exponents and their short-time behavior. Comment: 7 pages, 5 figures, to appear in Phys. Rev. E
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1405.7261 Zobrazit plný text záznamu View this record from Arxiv