Experimental ratchet effect in superconducting films with periodic arrays of asymmetric potentials

J. E. Villegas, E. M. Gonzalez, M. P. Gonzalez, J. V. Anguita, and J. L. Vicent
Phys. Rev. B 71, 024519 – Published 26 January 2005

Abstract

A vortex lattice ratchet effect has been investigated in Nb films grown on arrays of nanometric Ni triangles, which induce periodic asymmetric pinning potentials. The vortex lattice motion yields a net dc voltage when an ac driving current is applied to the sample and the vortex lattice moves through the field of asymmetric potentials. This ratchet effect is studied taking into account the array geometry, the temperature, the number of vortices per unit cell of the array, and the applied ac currents.

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  • Received 4 June 2004

DOI:https://doi.org/10.1103/PhysRevB.71.024519

©2005 American Physical Society

Authors & Affiliations

J. E. Villegas1, E. M. Gonzalez1, M. P. Gonzalez1, J. V. Anguita2, and J. L. Vicent1

  • 1Departamento Fisica Materiales, Facultad CC. Fisicas, Universidad Complutense, 28040 Madrid, Spain
  • 2Instituto Microelectronica de Madrid, Centro Nacional Microelectronica, CSIC, Isaac Newton 8, P.T.M. Tres Cantos, 28760 Madrid, Spain

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Vol. 71, Iss. 2 — 1 January 2005

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