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Condensed Matter > Superconductivity

arXiv:1109.6507 (cond-mat)
[Submitted on 29 Sep 2011]

Title:Deterministic Josephson Vortex Ratchet with a load

Authors:M. Knufinke, K. Ilin, M. Siegel, D. Koelle, R. Kleiner, E. Goldobin
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Abstract:We investigate experimentally a deterministic underdamped Josephson vortex ratchet -- a fluxon-particle moving along a Josephson junction in an asymmetric periodic potential. By applying a sinusoidal driving current one can compel the vortex to move in a certain direction, producing average dc voltage across the junction. Being in such a rectification regime we also load the ratchet, i.e., apply an additional dc bias current I_dc (counterforce) which tilts the potential so that the fluxon climbs uphill due to the ratchet effect. The value of the bias current at which the fluxon stops climbing up defines the strength of the ratchet effect and is determined experimentally. This allows us to estimate the loading capability of the ratchet, the output power and efficiency. For the quasi-static regime we present a simple model which delivers simple analytic expressions for the above mentioned figures of merit.
Comments: submitted to PRE
Subjects: Superconductivity (cond-mat.supr-con); Chaotic Dynamics (nlin.CD); Pattern Formation and Solitons (nlin.PS); Exactly Solvable and Integrable Systems (nlin.SI)
Cite as: arXiv:1109.6507 [cond-mat.supr-con]
  (or arXiv:1109.6507v1 [cond-mat.supr-con] for this version)
  https://doi.org/10.48550/arXiv.1109.6507
Journal reference: Phys. Rev. E 85, 011122 (2012)
Related DOI: https://doi.org/10.1103/PhysRevE.85.011122

Submission history

From: Edward Goldobin [view email]
[v1] Thu, 29 Sep 2011 12:42:41 UTC (1,209 KB)
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