Proximity induced enhancement of the Curie temperature in hybrid spin injection devices

C Song; M Sperl; M Utz; M Ciorga; G Woltersdorf; D Schuh; D Bougeard; C H Back; D Weiss

doi:10.1103/PhysRevLett.107.056601

Proximity induced enhancement of the Curie temperature in hybrid spin injection devices

Phys Rev Lett. 2011 Jul 29;107(5):056601. doi: 10.1103/PhysRevLett.107.056601. Epub 2011 Jul 26.

Authors

C Song¹, M Sperl, M Utz, M Ciorga, G Woltersdorf, D Schuh, D Bougeard, C H Back, D Weiss

Affiliation

¹ Institut für Experimentelle und Angewandte Physik, Universität Regensburg, 93040 Regensburg, Germany.

PMID: 21867085
DOI: 10.1103/PhysRevLett.107.056601

Abstract

We investigate the increase of the Curie temperature T(C) in a lateral spin injection geometry where the ferromagnetic (Ga,Mn)As injector and detector contacts are capped by a thin iron film. Because of interlayer coupling between Fe and (Ga,Mn)As T(C) gets enhanced by nearly 100% for the thinnest (Ga,Mn)As films. The use of the proximity effect might pave the way for practical implementation of spintronic devices.