Infrared study of a La0.7Sr0.3MnO3-delta micrometric transistor channel (Articolo in rivista)

Type
Label
  • Infrared study of a La0.7Sr0.3MnO3-delta micrometric transistor channel (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.physb.2007.10.375 (literal)
Alternative label
  • Ortolani, M; Lee, JS; Schade, U; Pallecchi, I; Gadaleta, A; Marre, D (2008)
    Infrared study of a La0.7Sr0.3MnO3-delta micrometric transistor channel
    in Physica. B + C (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ortolani, M; Lee, JS; Schade, U; Pallecchi, I; Gadaleta, A; Marre, D (literal)
Pagina inizio
  • 1922 (literal)
Pagina fine
  • 1926 (literal)
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  • 403 (literal)
Rivista
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  • 5 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Berliner Elektronenspeicherringgesellschaft für Synchrotronstrahlung (BESSY), Albert-Einstein Strasse 15, 12489 Berlin, Germany CNR-INFM LAMIA and Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy (literal)
Titolo
  • Infrared study of a La0.7Sr0.3MnO3-delta micrometric transistor channel (literal)
Abstract
  • We studied the polaron conductivity in a field-effect transistor (FET) based on the doped oxide La0.7Sr0.3MnO3-delta, where the electric field penetration depth is enhanced due to suppression of metallic conduction by large oxygen deficiency delta, by mid-infrared microspectroscopy (wavelengths from 1.4 to 12 mu m) on a 3 mu m wide active channel. Synchrotron radiation was used to obtain the mid-infrared response at the diffraction limit. We found that bound polarons, although clearly detected, play a minor role in the electric field-induced dc conductivity modulation, which may be then attributed to the accumulation/depletion of free carriers. (c) 2007 Elsevier B.V. All rights reserved. (literal)
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