Nonadiabatic ratchet effect in superconducting films with a tilted cosine pinning potential

被引：1
|
作者：
Shklovskij, Valerij A. [1 ,2 ]
Dobrovolskiy, Oleksandr V. [3 ]
机构：
[1] NSC KIPT, Inst Theoret Phys, UA-61108 Kharkov, Ukraine
[2] Kharkov Natl Univ, Phys Dept, UA-61077 Kharkiv, Ukraine
[3] GoetheUniv, Physikal Inst, D-60438 Frankfurt, Germany
来源：
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5 | 2012年 / 400卷
关键词：
D O I：
10.1088/1742-6596/400/2/022108
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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, with in 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.
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页数：4
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