Disordered vortex matter out of equilibrium: a Langevin molecular dynamics study

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

doi:10.1080/08927022.2015.1119826

Disordered vortex matter out of equilibrium: a Langevin molecular dynamics study

Journal Article · Wed Aug 17 00:00:00 EDT 2016 · Molecular Simulation

DOI:https://doi.org/10.1080/08927022.2015.1119826· OSTI ID:1855166

Assi, Hiba ^[1]; Chaturvedi, Harshwardhan ^[2]; Dobramysl, Ulrich ^[3]; 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)
Univ. of Oxford (United Kingdom)

We discuss the use of Langevin molecular dynamics in the investigation of the non-equilibrium properties of disordered vortex matter. Here, our special focus is set on values of system parameters that are realistic for disordered high-T_c superconductors such as YBCO. Using a discretised elastic line model, we study different aspects of vortices far from thermal equilibrium. On the one hand, we investigate steady-state properties of driven magnetic flux lines in a disordered environment, namely the current–voltage characteristics, the gyration radius and the pinning time statistics. On the other hand, we study the complex relaxation processes and glassy-like dynamics that emerge in type-II superconductors due to the intricate competition between the long-range vortex–vortex repulsion and flux pinning due to randomly placed point defects. To this end, we consider different types of sudden perturbations: temperature, magnetic field and external current quenches.

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:: 1855166

Journal Information:: Molecular Simulation, Journal Name: Molecular Simulation Journal Issue: 16 Vol. 42; ISSN 0892-7022

Publisher:: Taylor & FrancisCopyright 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
Critical scaling and aging near the flux-line-depinning transition Chaturvedi, Harshwardhan; Dobramysl, Ulrich; Pleimling, Michel Physical Review B, Vol. 101, Issue 2 https://doi.org/10.1103/physrevb.101.024515	journal	January 2020
Dynamical regimes of vortex flow in type-II superconductors with parallel twin boundaries Chaturvedi, H.; Galliher, N.; Dobramysl, Ulrich Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.46400	text	January 2019
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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74 ATOMIC AND MOLECULAR PHYSICS
Langevin molecular dynamics
disordered vortex matter
pinning statistics
relaxation processes
type-II superconductors

Disordered vortex matter out of equilibrium: a Langevin molecular dynamics study

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References (35)

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