Analysis of linear and nonlinear conductivity of plasma-like systems on the basis of the Fokker-Planck equation

S.A. Trigger, W. Ebeling, G.J.F. van Heijst, D. Litinski

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

67 Downloads (Pure)

Samenvatting

The problems of high linear conductivity in an electric field, as well as nonlinear conductivity, are considered for plasma-like systems. First, we recall several observations of nonlinear fast charge transport in dusty plasma, molecular chains, lattices, conducting polymers, and semiconductor layers. Exploring the role of noise we introduce the generalized Fokker-Planck equation. Second, one-dimensional models are considered on the basis of the Fokker-Planck equation with active and passive velocity-dependent friction including an external electrical field. On this basis, it is possible to find the linear and nonlinear conductivities for electrons and other charged particles in a homogeneous external field. It is shown that the velocity dependence of the friction coefficient can lead to an essential increase of the electron average velocity and the corresponding conductivity in comparison with the usual model of constant friction, which is described by the Drude-type conductivity. Applications including novel forms of controlled charge transfer and non-Ohmic conductance are discussed.
I. INTRODUCTION
Originele taal-2Engels
Artikelnummer042108
Aantal pagina's12
TijdschriftPhysics of Plasmas
Volume22
Nummer van het tijdschrift4
DOI's
StatusGepubliceerd - 2015

Vingerafdruk Duik in de onderzoeksthema's van 'Analysis of linear and nonlinear conductivity of plasma-like systems on the basis of the Fokker-Planck equation'. Samen vormen ze een unieke vingerafdruk.

  • Citeer dit