Anisotropic optical conductivity of Sr3Ru2O7 (Articolo in rivista)

Type
Label
  • Anisotropic optical conductivity of Sr3Ru2O7 (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.78.155132 (literal)
Alternative label
  • Mirri, C; Baldassarre, L; Lupi, S; Ortolani, M; Fittipaldi, R; Vecchione, A; Calvani, P (2008)
    Anisotropic optical conductivity of Sr3Ru2O7
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mirri, C; Baldassarre, L; Lupi, S; Ortolani, M; Fittipaldi, R; Vecchione, A; Calvani, P (literal)
Pagina inizio
  • 155132 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 78 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Mirri, C.; Baldassarre, L.; Lupi, S.; Calvani, P.] Univ Roma La Sapienza, INFM Coherentia, CNR, I-00185 Rome, Italy; [Ortolani, M.] Berliner Elektronenspeicherring Gesell Synchrotro, D-12489 Berlin, Germany; [Fittipaldi, R.; Vecchione, A.] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, Italy; [Fittipaldi, R.; Vecchione, A.] Lab Reg Supermat, INFM, CNR, I-84081 Baronissi, Italy (literal)
Titolo
  • Anisotropic optical conductivity of Sr3Ru2O7 (literal)
Abstract
  • The optical conductivity sigma(omega) of Sr3Ru2O7 has been studied both in the ab planes, between 12 and 450 K, and along the c axis between 12 and 300 K. sigma(ab)(omega) is Drude-type but, for increasing T, it shows a crossover around 300 K to a regime with enhanced scattering rate, probably driven by a stronger coupling with the optical phonons. The spectral weight shows the imprints of strong correlations, but less pronounced than in a high-T-c material. Along the c axis, the Drude term has a much smaller plasma frequency, and a strong absorption appears at 1 eV. These findings indicate an anisotropic metallic state where electron-electron and electron-phonon interactions play a major role. This picture may be reconciled with the local-density calculations reported in the literature, which predict an insulating c axis, once those interactions are taken into account. (literal)
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