Proximity effect in atomic-scaled hybrid superconductor/ferromagnet structures: Crucial role of electron spectraX. Montiel1, D. Gusakova1, M. Daumens2 and A. Buzdin1
1 Condensed Matter Theory Group, CPMOH, Université de Bordeaux and CNRS F-33405 Talence, France, EU
2 LPT, Université Bordeaux 1 - 33170 Gradignan, France, EU
received 24 March 2009; accepted in final form 31 May 2009; published June 2009
published online 1 July 2009
We study the influence of the configuration of the majority and minority spin subbands of electron spectra on the properties of atomic-scaled superconductor/ferromagnet S/F/S and F/S/F hybrid structures. At low temperatures, the S/F/S junction is either a 0 or junction depending on the energy shift between S and F materials and the anisotropy of the Fermi surfaces. We found that the spin-switch effect in F/S/F system can be reversed if the minority spin electron spectra in F metal is of the hole-like type.
74.45.+c - Proximity effects; Andreev effect; SN and SNS junctions.
74.78.Fk - Multilayers, superlattices, heterostructures.
© EPLA 2009