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Presence of Peierls pairing and absence of insulator-to-metal transition in VO2 (A): a structure-property relationship study.

hal.structure.identifierInstitute of Chemical Sciences and Centre for Advanced Energy Storage and Recovery
dc.contributor.authorPOPURI, Srinivasa Rao
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorARTEMENKO, Alla
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDECOURT, Rodolphe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVILLESUZANNE, Antoine
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPOLLET, Michaël
dc.date.issued2017
dc.identifier.issn1463-9076
dc.description.abstractEnLayered vanadium oxides have been extensively explored due to their interesting metal-insulator transitions and energy conversion/storage applications. In the present study, we have successfully synthesized VO2 (A) polymorph powder samples by a single-step hydrothermal synthesis process and consolidated them using spark plasma sintering. The structural and electronic properties of VO2 (A) are measured over a large temperature range from liquid helium, across the structural transition (400-440 K) and up to 500 K. The structural analysis around this transition reveals an antiferrodistorsive to partially ferrodistorsive ordering upon cooling. It is followed by a progressive antiferromagnetic spin pairing which fully settles at about 150 K. The transport measurements show that, in contrast to the rutile archetype VO2 (R/M1), the structural transition comes with a transition from semiconductor to band-type insulator. Under these circumstances, we propose a scenario with a high temperature antiferrodistorsive paramagnetic semiconducting phase, followed by an intermediate regime with a partially ferrodistorsive paramagnetic semiconducting phase, and finally a low temperature partially ferrodistorsive antiferromagnetic band insulator phase with a possible V-V Peierls-type pairing.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enPresence of Peierls pairing and absence of insulator-to-metal transition in VO2 (A): a structure-property relationship study.
dc.typeArticle de revue
dc.identifier.doi10.1039/C7CP00248C
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Chimie inorganique
bordeaux.journalPhysical Chemistry Chemical Physics
bordeaux.page6601-6609
bordeaux.volume19
bordeaux.issue9
bordeaux.peerReviewedoui
hal.identifierhal-01490262
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01490262v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Chemistry%20Chemical%20Physics&rft.date=2017&rft.volume=19&rft.issue=9&rft.spage=6601-6609&rft.epage=6601-6609&rft.eissn=1463-9076&rft.issn=1463-9076&rft.au=POPURI,%20Srinivasa%20Rao&ARTEMENKO,%20Alla&DECOURT,%20Rodolphe&VILLESUZANNE,%20Antoine&POLLET,%20Micha%C3%ABl&rft.genre=article


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