The optical phonon spectrum of SmFeAsO (Articolo in rivista)

Type
Label
  • The optical phonon spectrum of SmFeAsO (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1209/0295-5075/84/67013 (literal)
Alternative label
  • Marini, C; Mirri, C; Profeta, G; Lupi, S; Di Castro, D; Sopracase, R; Postorino, P; Calvani, P; Perucchi, A; Massidda, S; Tropeano, GM; Putti, M; Martinelli, A; Palenzona, A; Dore, P (2008)
    The optical phonon spectrum of SmFeAsO
    in Europhysics letters (Print)
    (literal)
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  • Marini, C; Mirri, C; Profeta, G; Lupi, S; Di Castro, D; Sopracase, R; Postorino, P; Calvani, P; Perucchi, A; Massidda, S; Tropeano, GM; Putti, M; Martinelli, A; Palenzona, A; Dore, P (literal)
Pagina inizio
  • 67013-1 (literal)
Pagina fine
  • 67013-6 (literal)
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  • 84 (literal)
Rivista
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  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • \"[Marini, C.; Mirri, C.; Lupi, S.; Di Castro, D.; Sopracase, R.; Postorino, P.; Calvani, P.; Dore, P.] Univ Roma La Sapienza, CNR, INFM Coherentia, I-00185 Rome, Italy; [Marini, C.; Mirri, C.; Lupi, S.; Di Castro, D.; Sopracase, R.; Postorino, P.; Calvani, P.; Dore, P.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; [Marini, C.] Univ Roma Tre, Dipartimento Fis E Amaldi, Unit CNISM Roma1, I-00146 Rome, Italy; [Profeta, G.] Univ Aquila, Dipartimento Fis, CNISM, I-67010 Coppito, AQ, Italy; [Perucchi, A.] Sincrotrone Trieste SCpA, I-34012 Basovizza, TS, Italy; [Massidda, S.] Univ Cagliari, CNR, INFM, SLACS, I-09042 Monserrato, CA, Italy; [Massidda, S.] Univ Cagliari, Dipartimento Sci Fis, I-09042 Monserrato, CA, Italy; [Tropeano, G. M.; Putti, M.; Martinelli, A.; Palenzona, A.] CNR, INFM, LAMIA, I-16146 Genoa, Italy; [Tropeano, G. M.; Putti, M.] CNR, Dipartimento Fis, I-16146 Genoa, Italy; [Martinelli, A.; Palenzona, A.] CNR, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy (literal)
Titolo
  • The optical phonon spectrum of SmFeAsO (literal)
Abstract
  • We measured the Raman and the infrared phonon spectrum of SmFeAsO polycrystalline samples. We also performed density functional theory calculations within the pseudopotential approximation to obtain the structural and dynamical lattice properties of both the SmFeAsO and the prototype LaFeAsO compounds. The measured Raman and infrared phonon frequencies are well predicted by the optical phonon frequencies computed at the G point, showing the capability of the employed ab initio methods to describe the dynamical properties of these materials. The present study and the comparison among the phonon frequencies of different oxypnictides can provide a theoretical/experimental background for stimulating further investigations on the role of phonons in the physics of these materials. Copyright (C) EPLA, 2008 (literal)
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