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Semimagnetic ZnMnSe/CdSe Fractional Monolayer Superlattice as an Injector of Spin‐Polarized Carriers
Author(s) -
Terent'ev Ya.V.,
Toropov A.A.,
Sorokin S.V.,
Lebedev A.V.,
Ivanov S.V.,
Kopev P.S.,
Buyanova I.A.,
Chen W.M.,
Monemar B.
Publication year - 2002
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 - 10.1002/1521-3951(200201)229:2<765::aid-pssb765>3.0.co;2-#
Subject(s) - superlattice , monolayer , condensed matter physics , materials science , spin (aerodynamics) , injector , physics , nanotechnology , thermodynamics
We report on effective injection of spin‐oriented carriers from a semimagnetic semiconductor structure to a non‐magnetic ZnCdSe/ZnSe quantum well (QW). A short‐period ZnMnSe/CdSe fractional monolayer superlattice was used as a spin injector. The carriers are photo‐generated in the semimagnetic region, spin‐polarized via the effect of giant Zeeman splitting and then injected into the non‐magnetic QW. The spin injection efficiency was estimated by circular polarization measurements of recombination emission from the QW. The maximal detected degree of the spin polarization is about 25%.