Relaxation dynamics in type-II superconductors with point-like and correlated disorder
Abstract
We employ an elastic line model to investigate the steady-state properties and non-equilibrium relaxation kinetics of magnetic vortex lines in disordered type-II superconductors using Langevin molecular dynamics (LMD). Here, we extract the dependence of the mean vortex line velocity and gyration radius as well as the mean-square displacement in the steady state on the driving current, and measure the vortex density and height autocorrelations in the aging regime. We study samples with either randomly distributed pointlike or columnar attractive pinning centers, which allows us to distinguish the complex relaxation features of interacting flux lines subject to extended vs. uncorrelated disorder. Additionally, we find that our new LMD findings match earlier Monte Carlo (MC) simulation data well, verifying that these two microscopically quite distinct simulation methods lead to macroscopically very similar results for non-equilibrium vortex matter.
- Authors:
-
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
- Publication Date:
- Research Org.:
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1855159
- Grant/Contract Number:
- FG02-09ER46613; SC0002308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. B, Condensed Matter and Complex Systems
- Additional Journal Information:
- Journal Volume: 86; Journal Issue: 5; Journal ID: ISSN 1434-6028
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Solid State and Materials
Citation Formats
Dobramysl, Ulrich, Assi, Hiba, Pleimling, Michel, and Täuber, Uwe C. Relaxation dynamics in type-II superconductors with point-like and correlated disorder. United States: N. p., 2013.
Web. doi:10.1140/epjb/e2013-31101-x.
Dobramysl, Ulrich, Assi, Hiba, Pleimling, Michel, & Täuber, Uwe C. Relaxation dynamics in type-II superconductors with point-like and correlated disorder. United States. https://doi.org/10.1140/epjb/e2013-31101-x
Dobramysl, Ulrich, Assi, Hiba, Pleimling, Michel, and Täuber, Uwe C. Wed .
"Relaxation dynamics in type-II superconductors with point-like and correlated disorder". United States. https://doi.org/10.1140/epjb/e2013-31101-x. https://www.osti.gov/servlets/purl/1855159.
@article{osti_1855159,
title = {Relaxation dynamics in type-II superconductors with point-like and correlated disorder},
author = {Dobramysl, Ulrich and Assi, Hiba and Pleimling, Michel and Täuber, Uwe C.},
abstractNote = {We employ an elastic line model to investigate the steady-state properties and non-equilibrium relaxation kinetics of magnetic vortex lines in disordered type-II superconductors using Langevin molecular dynamics (LMD). Here, we extract the dependence of the mean vortex line velocity and gyration radius as well as the mean-square displacement in the steady state on the driving current, and measure the vortex density and height autocorrelations in the aging regime. We study samples with either randomly distributed pointlike or columnar attractive pinning centers, which allows us to distinguish the complex relaxation features of interacting flux lines subject to extended vs. uncorrelated disorder. Additionally, we find that our new LMD findings match earlier Monte Carlo (MC) simulation data well, verifying that these two microscopically quite distinct simulation methods lead to macroscopically very similar results for non-equilibrium vortex matter.},
doi = {10.1140/epjb/e2013-31101-x},
journal = {European Physical Journal. B, Condensed Matter and Complex Systems},
number = 5,
volume = 86,
place = {United States},
year = {Wed May 22 00:00:00 EDT 2013},
month = {Wed May 22 00:00:00 EDT 2013}
}
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