Observation of insulating nanoislands in ferromagnetic GaMnAs

Simple item page
dc.contributor.authorWang, D. M.
dc.contributor.authorRen, Y. H.
dc.contributor.authorJacobs, P. W.
dc.contributor.authorFahy, Stephen B.
dc.contributor.authorLiu, X.
dc.contributor.authorFurdyna, J. K.
dc.contributor.authorSapega, V. F.
dc.contributor.authorMerlin, Roberto
dc.date.accessioned2017-09-08T09:15:48Z
dc.date.available2017-09-08T09:15:48Z
dc.date.issued2009
dc.description.abstractResonant Raman data on ferromagnetic GaMnAs reveal the existence of a new kind of defect: insulating nanoislands consisting of substitutional Mn-Ga acceptors surrounded by interstitial Mn-I donors. As indicated by the observation of a sharp 1S(3/2)-> 2S(3/2) Raman transition at similar to 703 cm(-1), the acceptor-bound holes inside the islands are isolated from the metallic surroundings. Instead, Mn-bound excitons do couple to the ferromagnetic environment, as shown by the presence of associated Raman magnon side bands. This leads to an estimate of 5-10 nm for the nanoisland radius. The islands disappear after annealing due to the removal of the Mn-I ions.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid256401
dc.identifier.citationWang, D. M., Ren, Y. H., Jacobs, P. W., Fahy, S., Liu, X., Furdyna, J. K., Sapega, V. F. and Merlin, R. (2009) 'Observation of insulating nanoislands in ferromagnetic GaMnAs', Physical Review Letters, 102(25), 256401 (4pp). doi: 10.1103/PhysRevLett.102.256401en
dc.identifier.doi10.1103/PhysRevLett.102.256401
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.issued25
dc.identifier.journaltitlePhysical Review Lettersen
dc.identifier.urihttps://hdl.handle.net/10468/4641
dc.identifier.volume102
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.102.256401
dc.rights© 2009, American Physical Societyen
dc.subjectElectronic structureen
dc.subjectBulk gaAsen
dc.subjectMnen
dc.subjectGa1-xMnxAsen
dc.subjectSemiconductorsen
dc.subjectSpectroscopyen
dc.subjectTemperatureen
dc.subjectAcceptoren
dc.subjectRamanen
dc.titleObservation of insulating nanoislands in ferromagnetic GaMnAsen
dc.typeArticle (peer-reviewed)en
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
3647.pdf
Size:
398.47 KB
Format:
Adobe Portable Document Format
Description:
Published Version
Download
Collections
Tyndall National Institute - Journal Articles
Physics - Journal Articles