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Relaxation dynamics of vortex lines in disordered type-II superconductors following magnetic field and temperature quenches

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1];  [2];  [3];  [2];  [2]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Virginia Tech, Department of Physics
  2. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  3. Univ. of Oxford (United Kingdom)
We study the effects of rapid temperature and magnetic field changes on the nonequilibrium relaxation dynamics of magnetic vortex lines in disordered type-II superconductors by employing an elastic line model and performing Langevin molecular dynamics simulations. In a previously equilibrated system, either the temperature is suddenly changed or the magnetic field is instantaneously altered which is reflected in adding or removing flux lines to or from the system. Here, the subsequent aging properties are investigated in samples with either randomly distributed pointlike or extended columnar defects, which allows us to distinguish the complex relaxation features that result from either type of pinning centers. One-time observables such as the radius of gyration and the fraction of pinned line elements are employed to characterize steady-state properties, and two-time correlation functions such as the vortex line height autocorrelations and their mean-square displacement are analyzed to study the nonlinear stochastic relaxation dynamics in the aging regime.
Research Organization:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0002308
OSTI ID:
1855163
Alternate ID(s):
OSTI ID: 1226178
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics Journal Issue: 5 Vol. 92; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (7)

Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors journal November 2017
Paramagnetic Meissner effect in ZrB 12 single crystal with non-monotonic vortex–vortex interactions journal September 2017
Critical scaling and aging near the flux-line-depinning transition journal January 2020
Dynamical regimes of vortex flow in type-II superconductors with parallel twin boundaries text January 2019
Paramagnetic Meissner effect in ZrB12 single crystal with non-monotonic vortex-vortex interactions text January 2017
Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors text January 2017
Dynamical regimes of vortex flow in type-II superconductors with parallel twin boundaries text January 2017

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