Vortex lattice dynamics in a-NbGe detected by mode-locking experiments
arXiv:cond-mat/0304046 · doi:10.1016/j.physc.2004.03.036
Abstract
We observed mode-locking (ML) of rf-dc driven vortex arrays in a superconducting weak pinning a-NbGe film. The ML voltage shows the expected scaling with the rf-frequency and the magnetic field. For large dc-velocity (corresponding to a large ML frequency), the ML current step width exhibits a squared Bessel function dependence on the rf-amplitude as predicted for ML of a lattice moving elastically through a random potential.
2 pages, 2 figures. Contribution to M2S-HTSC Rio