Time resolved measurements of spin and carrier dynamics in InAs films

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dc.contributorVirginia Tech. Physics Departmenten
dc.contributorVirginia Tech. Bradley Department of Electrical and Computer Engineeringen
dc.contributorKopin Corporationen
dc.contributor.authorKini, Rajeev N.en
dc.contributor.authorNontapot, Kanokwanen
dc.contributor.authorKhodaparast, Giti A.en
dc.contributor.authorWelser, Roger E.en
dc.contributor.authorGuido, Louis J.en
dc.contributor.departmentPhysicsen
dc.date.accessed2015-04-24en
dc.date.accessioned2015-05-21T15:46:26Zen
dc.date.available2015-05-21T15:46:26Zen
dc.date.issued2008-03-15en
dc.description.abstractWe report time resolved measurements of spin and carrier relaxation in InAs films with carrier densities of 1.3 x 10(16) and 1.6 x 10(16) cm(-3) grown on (001) and (111) GaAs, respectively. We used standard pump-probe and magneto-optical Kerr effect spectroscopy at different excitation wavelengths, power densities, and temperatures. We observed sensitivity of carrier and spin relaxation time to the photoinduced carrier density but not to the variation in temperature. We explain our results using the Elliot-Yafet picture of spin relaxation process in narrow gap semiconductors. (c) 2008 American Institute of Physics.en
dc.description.sponsorshipNational Science Foundation - Grant No. DMR-0507866en
dc.description.sponsorshipAFOSR Young Investigator Program - 06NE231en
dc.description.sponsorshipJeffress Trust Fund J748en
dc.description.sponsorshipAdvance-VTen
dc.description.sponsorshipNational Science Foundation - STTR Program (Award No. 0638227)en
dc.format.extent5 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKini, R. N., Nontapot, K., Khodaparast, G. A., Welser, R. E., Guido, L. J. (2008). Time resolved measurements of spin and carrier dynamics in InAs films. Journal of Applied Physics, 103(6). doi: 10.1063/1.2899091en
dc.identifier.doihttps://doi.org/10.1063/1.2899091en
dc.identifier.issn0021-8979en
dc.identifier.urihttp://hdl.handle.net/10919/52388en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/103/6/10.1063/1.2899091en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectSpin relaxationen
dc.subjectIII-V semiconductorsen
dc.subjectCarrier densityen
dc.subjectMagnetooptic Kerr effecten
dc.subjectReflectivityen
dc.titleTime resolved measurements of spin and carrier dynamics in InAs filmsen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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