Model I–V curves and figures of merit of underdamped deterministic Josephson ratchets
E. Goldobin, R. Menditto, D. Koelle, R. Kleiner
DOI 10.1103/PhysRevE.94.032203 · Physical Review E
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Abstract
We propose simple models for the current-voltage characteristics of typical Josephson ratchets. We consider the case of a ratchet working against a constant applied counter force and derive analytical expressions for the key characteristics of such a ratchet: rectification curve, stopping force, input and output powers, and rectification efficiency. Optimization of the ratchet performance is discussed.
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