Ratchet potential for fluxons in Josephson-Junction arrays

Details Ratchet potential for fluxons in Josephson-Junction arrays Ratchet potential for fluxons in Josephson-Junction arrays

1999-04-12

arxiv.org/abs/cond-mat/9904156v1

Europhysics Letters, 45, pp 700-706 (1999)

Physics

Condensed Matter

7 pages, 8 figures

Scientific paper

10.1209/epl/i1999-00224-x

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.

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