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Magnetic field control of charge excitations in CoFe2O4

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dc.contributor.authorHolinsworth, Brian S.
dc.contributor.authorHarms, Nathan C.
dc.contributor.authorFan, Shiyu
dc.contributor.authorMazumdar, Dipanjan
dc.contributor.authorGupta, Arun
dc.contributor.authorMcGill, Stephen A.
dc.contributor.authorMusfeldt, Janice L.
dc.contributor.otherUniversity of Tennessee Knoxville
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherFlorida State University
dc.contributor.otherSouthern Illinois University
dc.date.accessioned2023-09-28T22:00:25Z
dc.date.available2023-09-28T22:00:25Z
dc.date.issued2018
dc.description.abstractWe combine magnetic circular dichroism and photoconductivity with prior optical absorption and first principles calculations to unravel spin-charge interactions in the high Curie temperature magnet CoFe2O4 . In addition to revising the bandgap hierarchy, we reveal a broad set of charge transfer excitations in the spin down channel which are sensitive to the metamagnetic transition involving the spin state on Co centers. We also show photoconductivity that depends on an applied magnetic field. These findings open the door for the creation and control of spin-polarized electronic excitations from the minority channel charge transfer in spinel ferrites and other earth-abundant materials. (C) 2018 Author(s).en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationHolinsworth, B. S., Harms, N. C., Fan, S., Mazumdar, D., Gupta, A., McGill, S. A., & Musfeldt, J. L. (2018). Magnetic field control of charge excitations in CoFe2O4. In APL Materials (Vol. 6, Issue 6). AIP Publishing. https://doi.org/10.1063/1.5021792
dc.identifier.doi10.1063/1.5021792
dc.identifier.orcidhttps://orcid.org/0000-0002-1785-7209
dc.identifier.orcidhttps://orcid.org/0000-0002-6241-823X
dc.identifier.orcidhttps://orcid.org/0000-0002-7857-0148
dc.identifier.urihttps://ir.ua.edu/handle/123456789/12067
dc.languageEnglish
dc.language.isoen_US
dc.publisherAmerican Institute of Physics
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectYTTRIUM-IRON-GARNET
dc.subjectSPINEL
dc.subjectNANOPARTICLES
dc.subjectANISOTROPY
dc.subjectFERRITE
dc.subjectENERGY
dc.subjectCOBALT
dc.subjectNanoscience & Nanotechnology
dc.subjectMaterials Science, Multidisciplinary
dc.subjectPhysics, Applied
dc.titleMagnetic field control of charge excitations in CoFe2O4en_US
dc.typeArticle
dc.typetext

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Research and Publications - Department of Metallurgical and Materials Engineering