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Spin polarization of (Ga,Mn)As measured by Andreev spectroscopy: the role of spin-active scattering
- 1.0366889 - FZÚ 2012 RIV US eng J - Journal Article
Piano, S. - Grein, R. - Mellor, C.J. - Výborný, Karel - Campion, R. - Wang, M. - Eschrig, M. - Gallagher, B. L.
Spin polarization of (Ga,Mn)As measured by Andreev spectroscopy: the role of spin-active scattering.
Physical Review. B. Roč. 83, č. 8 (2011), 081305/1-081305/4. ISSN 1098-0121
R&D Projects: GA AV ČR KJB100100802; GA MŠMT(CZ) 7E08087
EU Projects: European Commission(XE) 214499 - NAMASTE; European Commission(XE) 237375 - SemiSpinNano
Grant - others:AV ČR(CZ) AP0801
Program: Akademická prémie - Praemium Academiae
Institutional research plan: CEZ:AV0Z10100521
Keywords : Andreev spectroscopy * magnetic semiconductors
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.691, year: 2011
We investigate the spin polarization of the ferromagnetic semiconductor (Ga,Mn)As by point-contact Andreev reflection spectroscopy. We find a transport polarization around 57%, in considerably better agreement with the k.p kinetic-exchange model of (Ga,Mn)As, than the significantly larger estimates inferred from the BTK model.
Permanent Link: http://hdl.handle.net/11104/0201724
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