Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems (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.86.085421 (literal)

Alternative label

• A. Principi, M. Carrega, R. Asgari, V. Pellegrini, M. Polini (2012)
  Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• A. Principi, M. Carrega, R. Asgari, V. Pellegrini, M. Polini (literal)

Pagina inizio

• 085421 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://link.aps.org/doi/10.1103/PhysRevB.86.085421 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 86 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• National Enterprise for Nanoscience and Nanotechnology (NEST), Istituto Nanoscienze - Consiglio Nazionale delle Ricerche and Scuola Normale Superiore, I-56126 Pisa, Italy School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5531, Iran (literal)

Titolo

• Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems (literal)

Abstract

• We show that the plasmon spectrum of an ordinary two-dimensional electron gas (2DEG) hosted in a GaAs heterostructure is significantly modified when a graphene sheet is placed on the surface of the semiconductor in close proximity to the 2DEG. Long-range Coulomb interactions between massive electrons and massless Dirac fermions lead to a set of optical and acoustic intrasubband plasmons. Here we compute the dispersion of these coupled modes within the random phase approximation, providing analytical expressions in the long-wavelength limit that shed light on their dependence on the Dirac velocity and Dirac-fermion density. We also evaluate the resistivity in a Coulomb-drag transport setup. These Dirac-Schrödinger hybrid electron systems are experimentally feasible and open research opportunities for fundamental studies of electron-electron interaction effects in two spatial dimensions. (literal)

Prodotto di

• Fenomeni coerenti in nanosistemi semiconduttori ed ibridi (MD.P06.021.002) (Modulo)

Autore CNR

• Matteo CARREGA (Unità di personale esterno)
• MARCO POLINI (Persona)
• VITTORIO PELLEGRINI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• MARCO POLINI (Persona)
• VITTORIO PELLEGRINI (Unità di personale interno)
• Matteo CARREGA (Unità di personale esterno)

Prodotto

• Fenomeni coerenti in nanosistemi semiconduttori ed ibridi (MD.P06.021.002) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)

Insieme di parole chiave di

• Keywords of "Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems" (Insieme di parole chiave)