Optical conductivity of V4O7 across its metal-insulator transition (Articolo in rivista)

Type
Label
  • Optical conductivity of V4O7 across its metal-insulator transition (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.90.115149 (literal)
Alternative label
  • Lo Vecchio, I.; Autore, M.; D'Apuzzo, F.; Giorgianni, F.; Perucchi, A.; Schade, U.; Andreev, V. N.; Klimov, V. A.; Lupi, S. (2014)
    Optical conductivity of V4O7 across its metal-insulator transition
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lo Vecchio, I.; Autore, M.; D'Apuzzo, F.; Giorgianni, F.; Perucchi, A.; Schade, U.; Andreev, V. N.; Klimov, V. A.; Lupi, S. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 90 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Sapienza University Rome; Istituto Nazionale di Fisica Nucleare; Istituto Italiano di Tecnologia - IIT; Elettra Sincrotrone Trieste SCpA; INSTM UdR Trieste; Helmholtz Association; Ioffe Physical Technical Institute; Sapienza University Rome (literal)
Titolo
  • Optical conductivity of V4O7 across its metal-insulator transition (literal)
Abstract
  • The optical properties of a V4O7 single crystal have been investigated from the high-temperature metallic phase down to the low-temperature antiferromagnetic insulating phase. The temperature-dependent behavior of the optical conductivity across the metal-to-insulator (MIT) transition can be explained in a polaronic scenario. Charge carriers form strongly localized polarons in the insulating phase, as suggested by a far-infrared charge gap abruptly opening at T-MIT approximate to 237 K. In the metallic phase, instead, the presence of a Drude term is indicative of fairly delocalized charges with a moderately renormalized mass m* approximate to 5m,. The electronic spectral weight is almost recovered on an energy scale of 1 eV, which is much narrower than in the VO2 and V2O3 cases. Those findings suggest that electron-lattice interaction rather than electronic correlation is the driving force for the V4O7 metal-insulator transition. (literal)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it