Time-dependent London approach: Dissipation due to out-of-core normal excitations by moving vortices
Abstract
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.
- Authors:
-
- Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1433672
- Alternate Identifier(s):
- OSTI ID: 1426832
- Report Number(s):
- IS-J-9634
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1802541
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 97; Journal Issue: 9; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Kogan, V. G. Time-dependent London approach: Dissipation due to out-of-core normal excitations by moving vortices. United States: N. p., 2018.
Web. doi:10.1103/PhysRevB.97.094510.
Kogan, V. G. Time-dependent London approach: Dissipation due to out-of-core normal excitations by moving vortices. United States. https://doi.org/10.1103/PhysRevB.97.094510
Kogan, V. G. Mon .
"Time-dependent London approach: Dissipation due to out-of-core normal excitations by moving vortices". United States. https://doi.org/10.1103/PhysRevB.97.094510. https://www.osti.gov/servlets/purl/1433672.
@article{osti_1433672,
title = {Time-dependent London approach: Dissipation due to out-of-core normal excitations by moving vortices},
author = {Kogan, V. G.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.97.094510},
journal = {Physical Review B},
number = 9,
volume = 97,
place = {United States},
year = {Mon Mar 19 00:00:00 EDT 2018},
month = {Mon Mar 19 00:00:00 EDT 2018}
}
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Figures / Tables:
FIG. 1. : (Color online) The upper panel: contours of $h$($x, y$) = const for the parameter $s/λ$ = $v/v$$c$ = 0.4. The lower panel: $v/v$$c$ = 2. $x$ and $y$ are in units of $λ$.
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Works referencing / citing this record:
Reduction of Microwave Loss by Mobile Fluxons in Grooved Nb Films
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