Proximity effects and characteristic lengths in ferromagnet-superconductor structures

Klaus Halterman, Oriol T. Valls

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

We present an extensive theoretical investigation of the proximity effects that occur in clean ferromagnet/superconductor (formula presented) systems. We use a numerical method to solve self-consistently the Bogoliubov-de Gennes equations in the continuum. We obtain the pair amplitude and the local density of states, and use these results to extract the relevant lengths characterizing the leakage of superconductivity into the magnet and to study spin splitting into the superconductor. These phenomena are investigated as a function of parameters such as temperature, magnet polarization, interfacial scattering, sample size, and Fermi wave vector mismatch, all of which turn out to have important influence on the results. These results should help characterize and analyze future data and are shown to be in agreement with existing experiments.

Original languageEnglish (US)
Article number224516
Pages (from-to)1-17
Number of pages17
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number22
DOIs
StatePublished - 2002

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