Anomalous enhancement of the thermoelectric figure of merit by V co-doping of Nb-SrTiO3

Handle URI:
http://hdl.handle.net/10754/314528
Title:
Anomalous enhancement of the thermoelectric figure of merit by V co-doping of Nb-SrTiO3
Authors:
Ozdogan, K.; Alshareef, Husam N. ( 0000-0001-5029-2142 ) ; Schwingenschlögl, Udo ( 0000-0003-4179-7231 ) ; Upadhyay Kahaly, M.
Abstract:
The effect of V co-doping of Nb-SrTiO3 is studied by full-potential density functional theory. We obtain a stronger increase of the carrier density for V than for Nbdopants. While in Nb-SrTiO3 a high carrier density counteracts a high thermoelectric figure of merit, the trend is inverted by V co-doping. The mechanism leading to this behavior is explained in terms of a local spin-polarization introduced by the V ions. Our results indicate that magnetic co-doping can be a prominent tool for improving the thermoelectric figure of merit.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Computational Physics and Materials Science (CPMS); Functional Nanomaterials and Devices Research Group; Materials Science and Engineering Program
Citation:
Ozdogan K, Upadhyay Kahaly M, Alshareef HN, Schwingenschlögl U (2012) Anomalous enhancement of the thermoelectric figure of merit by V co-doping of Nb-SrTiO3. Appl Phys Lett 100: 193110. doi:10.1063/1.4714541.
Publisher:
American Institute of Physics
Journal:
Applied Physics Letters
Issue Date:
10-May-2012
DOI:
10.1063/1.4714541
Type:
Article
ISSN:
00036951
Additional Links:
http://scitation.aip.org/content/aip/journal/apl/100/19/10.1063/1.4714541
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Functional Nanomaterials & Devices; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)

Full metadata record

DC FieldValue Language
dc.contributor.authorOzdogan, K.en
dc.contributor.authorAlshareef, Husam N.en
dc.contributor.authorSchwingenschlögl, Udoen
dc.contributor.authorUpadhyay Kahaly, M.en
dc.date.accessioned2014-03-23T08:15:33Z-
dc.date.available2014-03-23T08:15:33Z-
dc.date.issued2012-05-10en
dc.identifier.citationOzdogan K, Upadhyay Kahaly M, Alshareef HN, Schwingenschlögl U (2012) Anomalous enhancement of the thermoelectric figure of merit by V co-doping of Nb-SrTiO3. Appl Phys Lett 100: 193110. doi:10.1063/1.4714541.en
dc.identifier.issn00036951en
dc.identifier.doi10.1063/1.4714541en
dc.identifier.urihttp://hdl.handle.net/10754/314528en
dc.description.abstractThe effect of V co-doping of Nb-SrTiO3 is studied by full-potential density functional theory. We obtain a stronger increase of the carrier density for V than for Nbdopants. While in Nb-SrTiO3 a high carrier density counteracts a high thermoelectric figure of merit, the trend is inverted by V co-doping. The mechanism leading to this behavior is explained in terms of a local spin-polarization introduced by the V ions. Our results indicate that magnetic co-doping can be a prominent tool for improving the thermoelectric figure of merit.en
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/apl/100/19/10.1063/1.4714541en
dc.rightsArchived with thanks to Applied Physics Lettersen
dc.titleAnomalous enhancement of the thermoelectric figure of merit by V co-doping of Nb-SrTiO3en
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentComputational Physics and Materials Science (CPMS)en
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalApplied Physics Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Physics, Yildiz Technical University, 34210 Istanbul, Turkeyen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorOzdogan, Kemalen
kaust.authorKahaly, M. Upadhyayen
kaust.authorAlshareef, Husam N.en
kaust.authorSchwingenschlögl, Udoen
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