Metal-to-insulator transition in thin-film polymeric AC60 (Articolo in rivista)

Type
Label
  • Metal-to-insulator transition in thin-film polymeric AC60 (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1367-2630/11/2/023035 (literal)
Alternative label
  • Macovez R., Hunt M.R.C., Shan J., Goldoni A., Pichler T., Pedio M., Moras P., Castellarin-Cudia C., Schiessling J., Venema L., Rudolf P. (2009)
    Metal-to-insulator transition in thin-film polymeric AC60
    in New journal of physics; IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Macovez R., Hunt M.R.C., Shan J., Goldoni A., Pichler T., Pedio M., Moras P., Castellarin-Cudia C., Schiessling J., Venema L., Rudolf P. (literal)
Pagina inizio
  • 023035 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 11 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • http://dx.doi.org/10.1088/1367-2630/11/2/023035 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands Department of Physics, University of Durham, Durham DH1 3LE, UK Sincrotrone Trieste S.C.p.A., Strada Statale 14 Km 163.5, AREA Science Park, I-34012 Trieste, Italy Fakultät für Physik, Universität Wien, Strudlhofgasse 4, A-1090 Wien, Austria Laboratorio Nazionale TASC-INFM, Strada Statale 14 Km 163.5, AREA Science Park, I-34012 Trieste, Italy Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Strada Statale 14 Km 163.5, AREA Science Park, I-34012 Trieste, Italy Ångström Laboratory, Department of Physics, Uppsala University, Box 530, S-75121 Uppsala, Sweden Leiden Institute of Chemistry, Gorlaeus Laboratories, PO Box 9501, 2300 RA Leiden, The Netherlands. (literal)
Titolo
  • Metal-to-insulator transition in thin-film polymeric AC60 (literal)
Abstract
  • We present an electron spectroscopy study of phase-pure AC60 thin films (A= Rb, Cs) in their monomer (face-centred cubic (fcc)) and polymer phases. A surface electronic reconstruction is observed in polymeric RbC60, analogous to that reported for the fcc phase. As for pristine C60, the occupied electronic states of AC60 fullerides are not dramatically affected by polymerization. The energy separation between the leading feature in photoemission and inverse photoemission is similar in both stable AC60 phases. These observations suggest that electron correlation effects are similar in the two phases, and that their different electronic behaviour is mainly related to the reduction of degeneracy of the polymer frontier states. Photoemission and electron-energy loss spectroscopy data show that the thin-film form of the RbC60 polymer is metallic at room temperature, and that it undergoes a metal–insulator transition at around 100 K. This transition temperature is much higher than that reported for the corresponding bulk phase and signals a poorer screening of Coulomb interactions at the film surface. (literal)
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