Nonlinear theory for a quantum diode in a dense Fermi magnetoplasma

Shukla, Padma and Eliasson, Bengt (2008) Nonlinear theory for a quantum diode in a dense Fermi magnetoplasma. Physical Review Letters, 100 (3). 036801. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.100.036801)

Abstract

We present a simple analytical nonlinear theory for quantum diodes in a dense Fermi magnetoplasma. By using the steady-state quantum hydrodynamical equations for a dense Fermi magnetoplasma, we derive coupled nonlinear Schödinger and Poisson equations. The latter are numerically solved to show the effects of the quantum statistical pressure, the quantum tunneling (or the quantum diffraction), and the external magnetic field strength on the potential and electron density profiles in a quantum diode at nanometer scales. It is found that the quantum statistical pressure introduces a lower bound on the steady electron flow in the quantum diode, while the quantum diffraction effect allows the electron tunneling at low flow speeds. The magnetic field acts as a barrier, and larger potentials are needed to drive currents through the quantum diode.

ORCID iDs

Eliasson, Bengt ORCID: https://orcid.org/0000-0001-6039-1574

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• Item metadata

  Item type:	Article
  ID code:	44514
  Dates:	Date Event 22 February 2008 Published
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	21 Aug 2013 15:23
  Last modified:	11 Nov 2024 10:27
  URI:	https://strathprints.strath.ac.uk/id/eprint/44514