Electrical injection of spin‐polarized electrons into single quantum dots | Zendy

Kümmell T. | Zendy; Arians R. | Zendy; Huang J. | Zendy; Wenisch J. | Zendy; Brunner K. | Zendy; Bacher G. | Zendy

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Electrical injection of spin‐polarized electrons into single quantum dots

Author(s) -

Kümmell T.,

Arians R.,

Huang J.,

Wenisch J.,

Brunner K.,

Bacher G.

Publication year - 2009

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200880659

Subject(s) - electroluminescence , quantum dot , spin (aerodynamics) , condensed matter physics , electron , physics , diode , optoelectronics , quantum dot laser , semiconductor , materials science , nanotechnology , quantum mechanics , semiconductor laser theory , layer (electronics) , thermodynamics

We demonstrate electrical spin‐injection into a single InAs quantum dot embedded in a GaAs‐based p–i–n diode structure using a diluted magnetic semiconductor (ZnMnSe) as a spin‐source. The spin‐information can be extracted directly by evaluating the polarisation degree of the single quantum dot electroluminescence signal. We obtain a spin‐polarisation up to 100% at T = 5 K that is decreasing with higher temperature. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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