Ultrafast Wigner transport in quantum wires

Mihail Nedjalkov, Dragica Vasileska, Emanouil Atanassov, Vassil Palankovski

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Two quantum-kinetic models, governing the transport of an initial highly non-equilibrium carrier distribution generated locally in a nanowire, are explored. Dissipation processes due to phonons govern the carrier relaxation, which at early stages of the evolution is characterized by the lack of energy conservation in the collisions. The models are analyzed and approached numerically by a backward Monte Carlo method. The basic difference between them is in the way of treatment of the finite collision duration time. The latter introduces quantum effects of broadening and retardation, ultrafast spatial transfer and modification of the classical trajectories, which are demonstrated in the presented simulation results.

Original languageEnglish (US)
Pages (from-to)235-238
Number of pages4
JournalJournal of Computational Electronics
Volume6
Issue number1-3
DOIs
StatePublished - Sep 1 2007

Keywords

  • Confined system
  • Electron-phonon interaction
  • Ultrafast evolution
  • Wigner transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Modeling and Simulation
  • Electrical and Electronic Engineering

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