Mode-locking in driven vortex lattices with transverse ac-drive and random pinning
arXiv:cond-mat/0112318 · doi:10.1103/PhysRevB.65.184508
Abstract
We find mode-locking steps in simulated current-voltage characteristics of driven vortex lattices with {\it random} pinning when an applied ac-current is {\it perpendicular} to the dc-current. For low frequencies there is mode-locking only above a non-zero threshold ac force amplitude, while for large frequencies there is mode-locking for any small ac force. This is consistent with the nature of {\it transverse} temporal order in the different regimes in the absence of an applied ac-drive. For large frequencies the magnitude of the fundamental mode-locked step depends linearly with the ac force amplitude.
4 pages, 4 figures, .tar.gz file
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- Depinning and dynamics of AC driven vortex lattices in random media
- Vortex Washboard Voltage Noise in Type-II Superconductors
- Nonlinear dynamics, rectification, and phase locking for particles on symmetrical two-dimensional periodic substrates with dc and circular ac drives
- Transverse phase-locking in fully frustrated Josephson junction arrays: a new type of fractional giant steps
- Transverse Phase Locking for Vortex Motion in Square and Triangular Pinning Arrays
- Nonequilibrium steady states of driven magnetic flux lines in disordered type-II superconductors