Far-infrared spectrum of ice Ih: A first-principles study (Articolo in rivista)

Type
Label
  • Far-infrared spectrum of ice Ih: A first-principles study (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.84.024103 (literal)
Alternative label
  • Profeta, G.; Scandolo, S. (2011)
    Far-infrared spectrum of ice Ih: A first-principles study
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Profeta, G.; Scandolo, S. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 84 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Aquila; Abdus Salam International Centre for Theoretical Physics; IOM CNR (literal)
Titolo
  • Far-infrared spectrum of ice Ih: A first-principles study (literal)
Abstract
  • The dielectric properties of ice Ih in the translational far-infrared region (0-400 cm(-1)) have been investigated by means of density functional theory methods. We show that interpretation of the experimental data for the absorption coefficient requires a full account of proton disorder, an ab initio description of the electronic response, and a proper treatment of the longitudinal-optical-transverse-optical (LO-TO) splitting. The orientational average for the LO-TO splitting yields a broad range of values, and the average over proton disorder gives rise to a peak at 150 cm(-1) in the absorption spectrum of ice Ih. The peak is not present in ice XI, the ferroelectric state with lowest energy. Our study supports the notion that the far-IR dielectric properties of water aggregates are tightly related to local molecular order. (literal)
Prodotto di
Autore CNR

Incoming links:


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