High efficiency deterministic Josephson Vortex Ratchet
Superconductivity
2007-05-23 v1 Pattern Formation and Solitons
Abstract
We investigate experimentally a Josephson vortex ratchet -- a fluxon in an asymmetric periodic potential driven by a deterministic force with zero time average. The highly asymmetric periodic potential is created in an underdamped annular long Josephson junction by means of a current injector providing efficiency of the device up to 91%. We measured the ratchet effect for driving forces with different spectral content. For monochromatic high-frequency drive the rectified voltage becomes quantized. At high driving frequencies we also observe chaos, sub-harmonic dynamics and voltage reversal due to the inertial mass of a fluxon.
Cite
@article{arxiv.cond-mat/0506754,
title = {High efficiency deterministic Josephson Vortex Ratchet},
author = {M. Beck and E. Goldobin and M. Neuhaus and M. Siegel and R. Kleiner and D. Koelle},
journal= {arXiv preprint arXiv:cond-mat/0506754},
year = {2007}
}
Comments
accepted by PRL. To see status click on http://134.2.74.170:88/cnt/cond-mat_0506754.html