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Magnon-assisted Andreev reflection in a ferromagnet-superconductor junction

McCann, E and Falko, Vladimir (2001) Magnon-assisted Andreev reflection in a ferromagnet-superconductor junction. Europhysics Letters, 56 (4). pp. 583-589. ISSN 0295-5075

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Abstract

A new mechanism for inelastic Andreev reflection at a ferromagnetic metal-superconductor interface is proposed, which consists of the simultaneous injection of a Cooper pair from the superconductor and the emission of a magnon inside the ferromagnet. We nd that this process generates an additional contribution to the subgap non-linear I(V) characteristics, which is asymmetric with respect to the sign of the bias voltage and is related to the density of states of magnons in the ferromagnet.

Item Type: Article
Journal or Publication Title: Europhysics Letters
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57044
Deposited By: ep_importer_pure
Deposited On: 31 Aug 2012 11:50
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57044

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