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Article: Magnetic-field-enhanced forbidden modes in Co-doped ZnO thin films revealed by Raman scattering

TitleMagnetic-field-enhanced forbidden modes in Co-doped ZnO thin films revealed by Raman scattering
Authors
Issue Date2010
Citation
Physical Review B - Condensed Matter and Materials Physics, 2010, v. 82, n. 1 How to Cite?
AbstractWe have performed Raman-scattering measurements on single-crystalline ZnO thin films with 0 and 3% Co doping. In the 3% Co-doped sample, three additional peaks are found whose intensities grow rapidly with applied magnetic fields up to 7 T, and which remain even at room temperature. The nature of the "forbidden" modes is explained in terms of bound magnetic polarons (BMPs), whose electronic density around each Co2 + impurity is altered by the field. This implies that BMPs dominate the local properties of dilute magnetic semiconductors (DMSs) at low-carrier concentrations, and further that they may play an important role in mediating long-range magnetic order. © 2010 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/254522
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933

 

DC FieldValueLanguage
dc.contributor.authorJi, J. T.-
dc.contributor.authorZhang, A. M.-
dc.contributor.authorXia, T. L.-
dc.contributor.authorCao, Q.-
dc.contributor.authorLiu, G. L.-
dc.contributor.authorHou, D.-
dc.contributor.authorZhang, Q. M.-
dc.date.accessioned2018-06-19T15:40:47Z-
dc.date.available2018-06-19T15:40:47Z-
dc.date.issued2010-
dc.identifier.citationPhysical Review B - Condensed Matter and Materials Physics, 2010, v. 82, n. 1-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10722/254522-
dc.description.abstractWe have performed Raman-scattering measurements on single-crystalline ZnO thin films with 0 and 3% Co doping. In the 3% Co-doped sample, three additional peaks are found whose intensities grow rapidly with applied magnetic fields up to 7 T, and which remain even at room temperature. The nature of the "forbidden" modes is explained in terms of bound magnetic polarons (BMPs), whose electronic density around each Co2 + impurity is altered by the field. This implies that BMPs dominate the local properties of dilute magnetic semiconductors (DMSs) at low-carrier concentrations, and further that they may play an important role in mediating long-range magnetic order. © 2010 The American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physics-
dc.titleMagnetic-field-enhanced forbidden modes in Co-doped ZnO thin films revealed by Raman scattering-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.82.014408-
dc.identifier.scopuseid_2-s2.0-77956498674-
dc.identifier.volume82-
dc.identifier.issue1-
dc.identifier.spagenull-
dc.identifier.epagenull-
dc.identifier.eissn1550-235X-

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