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

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Villegas, J. E. and González Herrera, Elvira María and Gonzalez, M. P. and Anguita, J. V. and Vicent López, José Luis (2005) Experimental ratchet effect in superconducting films with periodic arrays of asymmetric potentials. Physical review B, 71 (2). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.71.024519


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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.


Item Type:Article
Additional Information:

©2005 The American Physical Society.
We want to thank Spanish CICYT MAT2002-04543 and R. Areces Foundation. M.G. wants to thank Ministerio de Educación y Ciencia for a Ramon y Cajal contract.

Uncontrolled Keywords:Magnetic-Flux Quanta; Nb Films; Dots; Defects; Motors
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:43858
Deposited On:19 Jul 2017 15:12
Last Modified:19 Jul 2017 15:12

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