Temperature-independent ytterbium valence in YbGaGe (Articolo in rivista)

Type
Label
  • Temperature-independent ytterbium valence in YbGaGe (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.75.235109 (literal)
Alternative label
  • Doyle, BP; Carleschi, E; Magnano, E; Malvestuto, M; Dee, AA; Wills, AS; Janssen, Y; Canfield, PC (2007)
    Temperature-independent ytterbium valence in YbGaGe
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Doyle, BP; Carleschi, E; Magnano, E; Malvestuto, M; Dee, AA; Wills, AS; Janssen, Y; Canfield, PC (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 75 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, Lab Nazl TASC, I-34012 Basovizza, TS, Italy; Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy; Sincrotrone Trieste SCpA, I-34012 Basovizza, TS, Italy; Univ Coll London, Dept Chem, London WC1H 0AJ, England; Royal Inst Great Britain, Davy Faraday Res Lab, London W1S 4BS, England; Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France; Iowa State Univ, Ames Lab, Ames, IA 50011 USA (literal)
Titolo
  • Temperature-independent ytterbium valence in YbGaGe (literal)
Abstract
  • We have determined the ytterbium valence as a function of temperature in the reported near-zero thermal expansion material YbGaGe using x-ray photoemission at various incident photon energies. The Yb 3d, 4d, and 4f levels, which directly yield the Yb valence, have been measured. Careful analysis enabled the clear separation of surface and bulk contributions. Resonant photoemission at the 4d-4f absorption edge was used to enhance the low contribution of the Yb3+ component. Contrary to the initially proposed Yb valence transition, we find no change in the valence from room temperature down to 115 K. (literal)
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