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arXiv · 1605.04957

Transverse acousto-electric effect in superconductors

P. Lipavský·J. Koláček·P. -J. Lin
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Abstract

We formulate a theory based on the time-dependent Ginzburg Landau (TDGL) theory and Newtonian vortex dynamics to study the transverse acousto-electric response of a type-II superconductor with Abrikosov vortex lattice. When exposed to a transverse acoustic wave, Cooper pairs emerge from the the moving atomic lattice and moving electrons. As in the Tolman-Stewart effect in a normal metal, an electromagnetic field is radiated from the superconductor. We adapt the equilibrium-based TDGL theory to this non-equilibrium system by using a floating condensation kernel. Due to the interaction between normal and superconducting components, the radiated electric field as a function of magnetic field attains a maximum value occurring below the upper critical magnetic field. This local increase in electric field has weak temperature dependence and is suppressed by the presence of impurities in the superconductor.

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P. Lipavský, J. Koláček, P. -J. Lin. 2016-05-16. Transverse acousto-electric effect in superconductors. https://doi.org/10.1016/j.physc.2016.03.012

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