Magneto-optical spectroscopy of spin injection and spin relaxation in ZnMnSe/ZnCdSe and GaMnN/InGaN spin light-emitting structures

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Fältnamn	Indikatorer	Metadata
000		03129naa a2200397 4500
001		oai:DiVA.org:liu-45968
003		SwePub
008		091011s2007 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-459682 URI
024	7	a https://doi.org/10.1002/pssa.2006730202 DOI
040		a (SwePub)liu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a kon2 swepub-publicationtype
100	1	a Buyanova, Irina A.u Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan4 aut0 (Swepub:liu)iribo40
245	1 0	a Magneto-optical spectroscopy of spin injection and spin relaxation in ZnMnSe/ZnCdSe and GaMnN/InGaN spin light-emitting structures
264	1	b Wiley,c 2007
338		a print2 rdacarrier
500		a INVITED TALK
520		a In this paper we review our recent results from in-depth investigations of physical mechanisms which govern efficiency of several processes important for future spintronic devises, such as spin alignment within diluted magnetic semiconductors (DMS), spin injection from DMS to non-magnetic spin detectors (SDs) and also spin depolarization within SD. Spin-injection structures based on II-VIs (e.g. ZnMnSe/Zn(Cd)Se) and III-Vs (e.g. GaMnN/Ga(In)N) were studied as model cases. Exciton spin relaxation within ZnMnSe DMS, important for spin alignment, was found to critically depend on Zeeman splitting of the exciton states and is largely facilitated by involvement of longitudinal optical (LO) phonons. Optical spin injection in ZnMnSe/Zn(Cd)Se was shown to be governed by (i) commonly believed tunneling of individual carriers or excitons and (ii) energy transfer via localized excitons and spatially separated localized electron-hole pairs (LEHP) located within DMS. Unexpectedly, the latter mechanism is in fact found to dominate spin injections. We shall also show that spin depolarization in the studied structures is essentially determined by efficient spin relaxation within non-magnetic spin detectors, which is an important factor limiting efficiency of spin detection. Detailed physical mechanisms leading to efficient spin depolarization will be discussed.
650	7	a NATURVETENSKAPx Fysikx Den kondenserade materiens fysik0 (SwePub)103042 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciencesx Condensed Matter Physics0 (SwePub)103042 hsv//eng
653		a TECHNOLOGY
653		a TEKNIKVETENSKAP
653		a Semiconductor physics
653		a Halvledarfysik
700	1	a Chen, Weiminu Linköpings universitet,Tekniska högskolan,Funktionella elektroniska material4 aut0 (Swepub:liu)weich55
700	1	a Oka, Y.4 aut
700	1	a Abernathy, C. R.4 aut
700	1	a Pearton, S. J.4 aut
710	2	a Linköpings universitetb Funktionella elektroniska material4 org
773	0	t 2006 E-MRS Fall Meetingd : Wileyg , s. 159-173q <159-173
773	0	t physica status solidi (a)d : Wileyg , s. 159-173q <159-173x 1862-6300
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-45968
856	4 8	u https://doi.org/10.1002/pssa.200673020

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Av författaren/redakt...: Buyanova, Irina ...; Chen, Weimin; Oka, Y.; Abernathy, C. R.; Pearton, S. J.

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NATURVETENSKAP: NATURVETENSKAP; och Fysik; och Den kondenserade ...

Artiklar i publikationen: 2006 E-MRS Fall ...; physica status s ...

Av lärosätet: Linköpings universitet

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