Superfluidity of metastable glassy bulk para-hydrogen at low temperature (Articolo in rivista)

Type
Label
  • Superfluidity of metastable glassy bulk para-hydrogen at low temperature (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.85.224513 (literal)
Alternative label
  • Osychenko O. N. [ 1 ] ; Rota, R. [ 2,3 ] ; Boronat, J. [ 1 ] (2012)
    Superfluidity of metastable glassy bulk para-hydrogen at low temperature
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Osychenko O. N. [ 1 ] ; Rota, R. [ 2,3 ] ; Boronat, J. [ 1 ] (literal)
Pagina inizio
  • 224513 (literal)
Pagina fine
  • 224513 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 85 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 22 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Politecn Cataluna, Dept Fis & Engn Nucl, E-08034 Barcelona, Spain [ 2 ] Univ Trent, Dipartimento Fis, I-38123 Trento, Italy [ 3 ] INO CNR BEC Ctr, I-38123 Trento, Italy (literal)
Titolo
  • Superfluidity of metastable glassy bulk para-hydrogen at low temperature (literal)
Abstract
  • Molecular para-hydrogen (p-H-2) has been proposed theoretically as a possible candidate for superfluidity, but the eventual superfluid transition is hindered by its crystallization. In this work, we study a metastable noncrystalline phase of bulk p-H-2 by means of the path integral Monte Carlo method in order to investigate at which temperature this system can support superfluidity. By choosing accurately the initial configuration and using a noncommensurate simulation box, we have been able to frustrate the formation of the crystal in the simulated system and to calculate the temperature dependence of the one-body density matrix and of the superfluid fraction. We observe a transition to a superfluid phase at temperatures around 1 K. The limit of zero temperature is also studied using the diffusion Monte Carlo method. Results for the energy, condensate fraction, and structure of the metastable liquid phase at T = 0 are reported and compared with the ones obtained for the stable solid phase. (literal)
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