Evidence of a pressure-induced metallization process in monoclinic VO2 (Articolo in rivista)

Type
Label
  • Evidence of a pressure-induced metallization process in monoclinic VO2 (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Arcangeletti, E; Baldassarre, L; Di Castro, D; Lupi, S; Malavasi, L; Marini, C; Perucchi, A; Postorino, P (2007)
    Evidence of a pressure-induced metallization process in monoclinic VO2
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Arcangeletti, E; Baldassarre, L; Di Castro, D; Lupi, S; Malavasi, L; Marini, C; Perucchi, A; Postorino, P (literal)
Pagina inizio
  • 196401 (literal)
Pagina fine
  • 196404 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 98 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Roma La Sapienza, Coherentia CNR INFM, I-00185 Rome, Italy; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Univ Pavia, Dipartimento Chim Fis M Rolla, INSTM, I-27100 Pavia, Italy; Univ Pavia, IENI-CNR, I-27100 Pavia, Italy (literal)
Titolo
  • Evidence of a pressure-induced metallization process in monoclinic VO2 (literal)
Abstract
  • Raman and combined infrared transmission and reflectivity measurements were carried out at room temperature (RT) on monoclinic VO2 over the 0-19 GPa and 0-14 GPa pressure ranges. Both lattice dynamics and optical gap show a remarkable stability up to P-*similar to 10 GPa whereas subtle modifications of V ion arrangements within the monoclinic lattice, together with the onset of a metallization process via band gap filling, are observed for P > P-*. Differently from P=0, where the VO2 metallic phase is found only in conjunction with the rutile structure above 340 K, a new RT metallic phase within a monoclinic structure appears accessible in the high pressure regime. (literal)
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