Gate controlled coupling of intersubband plasmons (Articolo in rivista)

Type
Label
  • Gate controlled coupling of intersubband plasmons (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.4788753 (literal)
Alternative label
  • Delteil A. [ 1 ] ; Vasanelli A. [ 1 ] ; Todorov Y. [ 1 ] ; Paulillo B. [ 1 ] ; Biasiol G. [ 2 ] ; Sorba L. [ 3,4 ] ; Sirtori C. [ 1 ] (2013)
    Gate controlled coupling of intersubband plasmons
    in Applied physics letters; AMER INST PHYSICS, CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD., WOODBURY, NY (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Delteil A. [ 1 ] ; Vasanelli A. [ 1 ] ; Todorov Y. [ 1 ] ; Paulillo B. [ 1 ] ; Biasiol G. [ 2 ] ; Sorba L. [ 3,4 ] ; Sirtori C. [ 1 ] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 102 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Paris Diderot, Sorbonne Paris Cite, Lab Mat & Phenomenes Quant, UMR7162, F-75013 Paris, France [ 2 ] IOM CNR, Lab TASC, I-34149 Trieste, Italy [ 3 ] Ist Nanosci CNR, NEST, I-56127 Pisa, Italy [ 4 ] Scuola Normale Super Pisa, I-56127 Pisa, Italy (literal)
Titolo
  • Gate controlled coupling of intersubband plasmons (literal)
Abstract
  • The optical response of a heavily doped quantum well, with two occupied subbands, has been investigated as a function of the electronic density. It is shown that the two optically active transitions are mutually coupled by dipole-dipole Coulomb interaction, which strongly renormalizes their absorption amplitude. In order to demonstrate this effect, we have measured a set of optical spectra on a device in which the electronic density can be tuned by the application of a gate voltage. Our results show that the absorption spectra can be correctly described only by taking into account the Coulomb coupling between the two transitions. As a consequence, the optical dipoles originating from intersubband transitions are not independent, but rather coupled oscillators with an adjustable strength. (literal)
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