Electrodynamics of BaFe2As2 from infrared measurements under pressure (Articolo in rivista)

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Label
  • Electrodynamics of BaFe2As2 from infrared measurements under pressure (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.85.174522 (literal)
Alternative label
  • L. Baldassarre1, A. Perucchi1, P. Postorino2, S. Lupi1,2, C. Marini2,3, L. Malavasi4, J. Jiang5, J. D. Weiss5, E. E. Hellstrom5, I. Pallecchi6, and P. Dore7 (2012)
    Electrodynamics of BaFe2As2 from infrared measurements under pressure
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Baldassarre1, A. Perucchi1, P. Postorino2, S. Lupi1,2, C. Marini2,3, L. Malavasi4, J. Jiang5, J. D. Weiss5, E. E. Hellstrom5, I. Pallecchi6, and P. Dore7 (literal)
Pagina inizio
  • 174522 (literal)
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  • http://link.aps.org/doi/10.1103/PhysRevB.85.174522 (literal)
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  • 85 (literal)
Rivista
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  • 6 (literal)
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  • 17 (literal)
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  • 1Sincrotrone Trieste, Area Science Park, 34012 Trieste, Italy 2CNR-IOM and Dipartimento di Fisica, Università di Roma \"Sapienza,\" Piazzale Aldo Moro 2, 00185 Rome, Italy 3European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex, France 4Dipartimento di Chimica Fisica M. Rolla, INSTM (UdR Pavia) and IENI-CNR, Università di Pavia, Viale Taramelli 16, 27100 Pavia, Italy 5Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, 2031 East Paul Dirac Drive, Tallahassee, Florida 32310, USA 6CNR-SPIN, Corso Perrone 24, 16152 Genova, Italy 7CNR-SPIN and Dipartimento di Fisica, Universitá di Roma \"Sapienza,\" Piazzale Aldo Moro 2, 00185 Rome, Italy (literal)
Titolo
  • Electrodynamics of BaFe2As2 from infrared measurements under pressure (literal)
Abstract
  • We report on an infrared study on the undoped compound BaFe2As2 as a function of pressure (up to about 10 GPa) at three temperatures (300, 160, and 110 K). The evolution with pressure and temperature of the optical conductivity shows that by increasing pressure, the mid-infrared absorptions associated with magnetic order are lowered while the Drude term increases, indicating the evolution towards a conventional metallic state. We evaluate the spectral weight dependence on pressure comparing it to that previously found upon doping. All the optical results indicate that lattice modifications cannot be recognized as the only parameter determining the low-energy electrodynamics in these compounds. (literal)
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