Enhanced transport properties in LaxMnO3- thin films epitaxially grown on SrTiO3 substrates: the profound impact of the oxygen content (Articolo in rivista)

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  • Enhanced transport properties in LaxMnO3- thin films epitaxially grown on SrTiO3 substrates: the profound impact of the oxygen content (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.3168649 (literal)
Alternative label
  • Pasquale Orgiani; Carmela Aruta; Regina Ciancio; Alice Galdi; Luigi Maritato (2009)
    Enhanced transport properties in LaxMnO3- thin films epitaxially grown on SrTiO3 substrates: the profound impact of the oxygen content
    in Applied physics letters; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pasquale Orgiani; Carmela Aruta; Regina Ciancio; Alice Galdi; Luigi Maritato (literal)
Pagina inizio
  • 013510-1 (literal)
Pagina fine
  • 013510-3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://link.aip.org/link/applab/v95/i1/p013510 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 95 (literal)
Rivista
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  • 3 (literal)
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  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-INFM Coherentia and Department of Mathematics and Informatics, University of Salerno, I-84081 Baronissi (SA), Italy; CNR-INFM Coherentia and Department of Physics, University of Napoli, I-80125 Napoli, Italy; CNR-INFM National Laboratory TASC, I-34012 Basovizza (TS), Italy; Department of Physics and CNR-INFM Coherentia, University of Salerno, I-84081 Baronissi (SA), Italy (literal)
Titolo
  • Enhanced transport properties in LaxMnO3- thin films epitaxially grown on SrTiO3 substrates: the profound impact of the oxygen content (literal)
Abstract
  • We report on structural, magnetic, and transport properties of La(x)MnO(3-delta) (LMO) thin films, epitaxially grown on SrTiO(3) substrates by molecular beam epitaxy. Transport properties were investigated as a function of the La/Mn stoichiometry and the oxygen content. Optimal oxygenated LMO films (with stoichiometry ratio La/Mn=0.88) show a metal-insulator transitions temperature T(MI) similar to 387 K and magnetotransport similar to those found in strontium-doped La(1-x)Sr(x)MnO(3) manganites compounds. Also in presence of a La/Mn slight unbalance (namely, x=0.98), LMO films show a very high T(MI)similar to 370 K. However, LMO samples with La/Mn ratio larger than one, show severely depressed conducting properties, being insulating for x > 1.10. All these findings clearly demonstrate that the lanthanum deficiency is a very efficient way to dope manganites, as in the case of bivalent cation-substitution. (literal)
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