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Spin Polarization and Injection in ZnMnSe/ZnCdSe Heterostructures
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0001-7155-7103
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0002-6405-9509
2002 (English)Conference paper, Published paper (Refereed)
Abstract [en]

 Magneto-optical spectroscopy in combination with tunable laser excitation spectroscopy is employed to carry out a detailed study of spin alignment and spin injection in II-VI wide-bandgap semiconductor heterostructures, aiming at optimization of structural design for nano-scale spintronic applications. The use of tunable excitation is shown to provide a valuable opportunity to monitor separately spin relaxation and spin injection processes in the structures. Efficient spin alignment is achieved by using a diluted magnetic semiconductor (DMS) (a layer of ZnMnSe or a ZnMnSe/CdSe superlattice) as thin as 10 nm. The spin alignment efficiency is shown to depend critically on the ratio between the rates of spin relaxation and spin transport within the DMS layer. This allows the realization of spin alignment and spin switching functions by varying the structural design.

Place, publisher, year, edition, pages
Materials Research Society Symposium Proceedings, Vol. 690: MRS , 2002. 15- p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-45098Local ID: 79670OAI: oai:DiVA.org:liu-45098DiVA: diva2:265960
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-03-27

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Buyanova, IrinaChen, Weimin

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