Quantum Physics Division
Faculty of PhysicsAdam Mickiewicz University

Correlated roughness effects on electrical conductivity of quantum wires

G. Palasantzas1 , J. Barnaś2,3 , J. Th. M. De Hosson1

1 Department of Applied Physics, Materials Science Centre and the Netherlands Institute for Metals Research, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
2 Department of Physics, A. Mickiewicz University, ul. Umultowska 85, 61-614 Poznań, Poland
3 Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60-179 Poznań, Poland

Journal of Applied Physics, 89, 8002 (2001)


The influence of electron scattering by rough boundaries on electrical conductivity of quantum wires is studied in the diffuse transport limit within the kinetic Boltzmann equation approach. The considerations are restricted to the wires obtained by lateral confinement of a two-dimensional electron gas. Both intra- and interboundary roughness correlations are taken into account. It is shown that the cross correlations usually increase the conductivity, leaving the shape and phase of the quantum size oscillations almost unaffected. ©2001 American Institute of Physics.


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