Model I-V curves and figures of merit of underdamped deterministic Josephson ratchets.

Goldobin, E; Menditto, R; Koelle, D; Kleiner, R · Phys Rev E · 2016

basic_science · Level V

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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.