Tunable φ Josephson junction ratchet

Menditto, R., Sickinger, H., Weides, M. , Kohlstedt, H., Koelle, D., Kleiner, R. and Goldobin, E. (2016) Tunable φ Josephson junction ratchet. Physical Review E, 94(4), 042202. (doi:10.1103/PhysRevE.94.042202) (PMID:27841459)

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Abstract

We demonstrate experimentally the operation of a deterministic Josephson ratchet with tunable asymmetry. The ratchet is based on a φ Josephson junction with a ferromagnetic barrier operating in the underdamped regime. The system is probed also under the action of an additional dc current, which acts as a counterforce trying to stop the ratchet. Under these conditions the ratchet works against the counterforce, thus producing a nonzero output power. Finally, we estimate the efficiency of the φ Josephson junction ratchet.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Weides, Professor Martin
Authors: Menditto, R., Sickinger, H., Weides, M., Kohlstedt, H., Koelle, D., Kleiner, R., and Goldobin, E.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Physical Review E
Publisher:American Physical Society
ISSN:2470-0045
ISSN (Online):2470-0053

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