Ratchet potential for fluxons in Josephson-Junction arrays

Abstract

We propose a simple configuration of a one-dimensional parallel array of Josephson junctions in which the pinning potential for trapped fluxons lacks inversion symmetry (ratchet potential). This sytem can be modelised by a set of non-linear pendula with alternating lengths and harmonic couplings. We show, by molecular dynamics simulations, that fluxons behave as single particles in which the predictions for overdamped thermal ratchet can be easily verified.

7 pages, 8 figures

References in corpus (5)

• Voltage rectification by a SQUID ratchet
• Cooperative Transport of Brownian Particles
• Temporally Asymmetric Fluctuations are Sufficient for the Operation of a Correlation Ratchet
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