Phase-locking of vortex lattices interacting with periodic pinning
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Department of Physics, University of California, Davis, California 95616 (United States)
- Department of Applied Science, University of California, Davis, California 95616 (United States)
We examine Shapiro steps for vortex lattices interacting with periodic pinning arrays driven by ac and dc currents. The vortex flow occurs by the motion of the interstitial vortices through the periodic potential generated by the vortices that remain pinned at the pinning sites. Shapiro steps are observed for fields B{sub {phi}}<B<2.25B{sub {phi}} with the most pronounced steps occurring for fields where the interstitial vortex lattice has a high degree of symmetry. The widths of the phase-locked current steps as a function of the magnitude of the ac driving are found to follow a Bessel function in agreement with theory. (c) 2000 The American Physical Society.
- OSTI ID:
- 20216418
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 61, Issue 18; Other Information: PBD: 1 May 2000; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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