Relativistic electron transport through an oscillating barrier: Wave-packet generation and Fano-type resonances

Lóránt Zs Szabó, Mihály G. Benedict, Attila Czirják, Péter Földi

Research output: Article

11 Citations (Scopus)

Abstract

Transport properties of massive Dirac particles are investigated through an oscillating barrier. The Floquet quasienergies related to the time-dependent potential appear both in transmission and reflection as sidebands around the incoming electron's energy. We take all relevant sidebands into account and present time averaged transmission and reflection probabilities in a wide energy range. Most qualitative features of scattering on a static barrier - like Klein paradox - are still visible, but the transmission probability in the evanescent regime observably increases due to the oscillation of the potential. The strongly inelastic scattering process is shown to lead to multiple Fano-type resonances and temporal trapping of the particles inside the oscillating potential. We also present a detailed study of the time evolution of the wave packets generated in the scattering process. Our results can be relevant for graphene with an induced energy gap.

Original languageEnglish
Article number075438
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number7
DOIs
Publication statusPublished - aug. 29 2013

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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