Thermopower in oxide heterostructures: The importance of being multiple-band conductors (Articolo in rivista)

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  • Thermopower in oxide heterostructures: The importance of being multiple-band conductors (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.86.195301 (literal)
Alternative label
  • Filippetti, A (Filippetti, A.)[ 1 ] ; Delugas, P (Delugas, P.)[ 1 ] ; Verstraete, MJ (Verstraete, M. J.)[ 2 ] ; Pallecchi, I (Pallecchi, I.)[ 3,4 ] ; Gadaleta, A (Gadaleta, A.)[ 3,4 ] ; Marre, D (Marre, D.)[ 3,4 ] ; Li, DF (Li, D. F.)[ 5 ] ; Gariglio, S (Gariglio, S.)[ 5 ] ; Fiorentini, V (Fiorentini, V.)[ 6,1 ] (2012)
    Thermopower in oxide heterostructures: The importance of being multiple-band conductors
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Filippetti, A (Filippetti, A.)[ 1 ] ; Delugas, P (Delugas, P.)[ 1 ] ; Verstraete, MJ (Verstraete, M. J.)[ 2 ] ; Pallecchi, I (Pallecchi, I.)[ 3,4 ] ; Gadaleta, A (Gadaleta, A.)[ 3,4 ] ; Marre, D (Marre, D.)[ 3,4 ] ; Li, DF (Li, D. F.)[ 5 ] ; Gariglio, S (Gariglio, S.)[ 5 ] ; Fiorentini, V (Fiorentini, V.)[ 6,1 ] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 19 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] UOS Cagliari, CNR IOM, Monserrato, CA, Italy [ 2 ] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium [ 3 ] CNR SPIN UOS Genova, I-16146 Genoa, Italy [ 4 ] Dipartimento Fis, I-16146 Genoa, Italy [ 5 ] Univ Geneva, DPMC, CH-1211 Geneva 4, Switzerland [ 6 ] Univ Cagliari, Dipartimento Fis, Monserrato, CA, Italy (literal)
Titolo
  • Thermopower in oxide heterostructures: The importance of being multiple-band conductors (literal)
Abstract
  • We combine transport experiments, advanced ab initio calculations, and model analysis to determine the thermoelectric power in the two-dimensional electron gas formed at the paradigmatic oxide interface SrTiO3/LaAlO3. We demonstrate that contrary to popular expectation, quantum confinement does not enhance the thermoelectric power of the electron gas at this interface with respect to its corresponding three-dimensional case. Our analysis directly relates the thermopower behavior to band structure characteristics typical of the oxide heterostructure (i.e., on-site and intersite band splitting), furnishing general interpretive prescriptions to search for oxide heterostructures with improved thermoelectric capabilities. (literal)
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