Relaxation dynamics in type-II superconductors with point-like and correlated disorder

Dobramysl, Ulrich; Assi, Hiba; Pleimling, Michel; Täuber, Uwe C.

doi:10.1140/epjb/e2013-31101-x

Relaxation dynamics in type-II superconductors with point-like and correlated disorder

Journal Article · Wed May 22 00:00:00 EDT 2013 · European Physical Journal. B, Condensed Matter and Complex Systems

DOI:https://doi.org/10.1140/epjb/e2013-31101-x· OSTI ID:1855159

Dobramysl, Ulrich ^[1]; Assi, Hiba ^[2]; Pleimling, Michel ^[2]; Täuber, Uwe C. ^[2]

Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Virginia Tech, Department of Physics
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: SC0002308

OSTI ID:: 1855159

Journal Information:: European Physical Journal. B, Condensed Matter and Complex Systems, Journal Name: European Physical Journal. B, Condensed Matter and Complex Systems Journal Issue: 5 Vol. 86; ISSN 1434-6028

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Enhanced flux pinning in YBCO multilayer films with BCO nanodots and segmented BZO nanorods Malmivirta, Mika; Rijckaert, Hannes; Paasonen, Ville Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-13758-6	journal	October 2017
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Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors Willa, R.; Koshelev, A. E.; Sadovskyy, I. A. arXiv https://doi.org/10.48550/arxiv.1708.01653	text	January 2017
Dynamical regimes of vortex flow in type-II superconductors with parallel twin boundaries Chaturvedi, Harshwardhan; Galliher, Nathan; Dobramysl, Ulrich arXiv https://doi.org/10.48550/arxiv.1710.03679	text	January 2017

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