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Title: Time-dependent London approach: Dissipation due to out-of-core normal excitations by moving vortices

Journal Article · · Physical Review B
 [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics

The dissipative currents due to normal excitations are included in the London description. The resulting time-dependent London equations are solved for a moving vortex and a moving vortex lattice. It is shown that the field distribution of a moving vortex loses its cylindrical symmetry. It experiences contraction that is stronger in the direction of the motion than in the direction normal to the velocity v. The London contribution of normal currents to dissipation is small relative to the Bardeen-Stephen core dissipation at small velocities, but it approaches the latter at high velocities, where this contribution is no longer proportional to v2. Here, to minimize the London contribution to dissipation, the vortex lattice is oriented so as to have one of the unit cell vectors along the velocity. This effect is seen in experiments and predicted within the time-dependent Ginzburg-Landau theory.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1433672
Alternate ID(s):
OSTI ID: 1426832
Report Number(s):
IS-J-9634; PRBMDO; TRN: US1802541
Journal Information:
Physical Review B, Vol. 97, Issue 9; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (14)

Ultrafast magnetic flux dendrite propagation into thin superconducting films journal July 2005
Observation of smectic and moving-Bragg-glass phases in flowing vortex lattices journal November 1998
Observation of the Correlated Vortex Flow in NbSe 2 with Magnetic Decoration journal January 1997
Microwave surface-impedance measurements of the electronic state and dissipation of magnetic vortices in superconducting LiFeAs single crystals journal August 2012
Imaging of super-fast dynamics and flow instabilities of superconducting vortices journal July 2017
Dynamic Melting of the Vortex Lattice journal December 1994
Structure and orientation of the moving vortex lattice in clean type-II superconductors journal December 2004
Theory of the Motion of Vortices in Superconductors journal November 1965
Vortex lattice structures in uniaxial superconductors journal August 1988
Theory of high-frequency linear response of isotropic type-II superconductors in the mixed state journal November 1992
Vortex creep at very low temperatures in single crystals of the extreme type-II superconductor Rh 9 In 4 S 4 journal April 2017
Theory of Nonequilibrium Superconductivity book May 2001
Neutron Diffraction Studies of Flowing and Pinned Magnetic Flux Lattices in 2 H Nb Se 2 journal November 1994
Vortex motion in type-II superconductors probed by muon spin rotation and small-angle neutron scattering journal August 2002

Cited By (3)

Reduction of Microwave Loss by Mobile Fluxons in Grooved Nb Films journal July 2018
Reduction of microwave loss by mobile fluxons in grooved Nb films text January 2018
Local flux-flow instability in superconducting films near Tc text January 2019

Figures / Tables (5)


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