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The Meservey-Tedrov effect in FSF double tunneling junctions

Gerd Bergmann·Jia Lu·Dawei Wang
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Abstract

Double tunneling junctions of ferromagnet-superconductor-ferromagnet electrodes (FSF) show a jump in the conductance when a parallel magnetic field reverses the magnetization of one of the ferromagnetic electrodes. This change is generally attributed to the spin-valve effect or to pair breaking in the superconductor because of spin accumulation. In this paper it is shown that the Meservey-Tedrov effect causes a similar change in the conductance since the magnetic field changes the energy spectrum of the quasi-particles in the superconductor. A reversal of the bias reverses the sign in the conductance jump.

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Gerd Bergmann, Jia Lu, Dawei Wang. 2004-10-19. The Meservey-Tedrov effect in FSF double tunneling junctions. https://doi.org/10.1103/physrevb.71.134521

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