The influence of an ac current of arbitrary amplitude and frequency on the mixed-state dc-voltage-ac-drive ratchet response of a superconducting film with a dc current-tilted uniaxial cosine pinning potential at finite temperature is theoretically investigated. The results are obtained in the single-vortex approximation, i.e., for non-interacting vortices, within the frame of an exact solution of the appropriate Langevin equation in terms of a matrix continued fraction. The dc voltage ratchet response is discussed as a function of ac current amplitude and frequency for various dc biases, in a wide range of corresponding dimensionless parameters. Our theoretical results are discussed in comparison with recent experimental work on the high-frequency ratchet response in nanostructured superconducting films. © Published under licence by IOP Publishing Ltd.
CITATION STYLE
Shklovskij, V. A., & Dobrovolskiy, O. V. (2012). Nonadiabatic ratchet effect in superconducting films with a tilted cosine pinning potential. In Journal of Physics: Conference Series (Vol. 400). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/400/2/022108
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