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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents



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ID: 7111.0, MPI für Festkörperforschung / FKF Publikationen 2002
Anisotropic scattering in quantum magnetotransport calculations for two-dimensional electron systems in a one-dimensional superlattice
Authors:Groß, J.; Gerhardts, R. R.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physical Review B
Volume:66
Issue / Number:15
Sequence Number of Article:155321
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Based on the self-consistent Born approximation for the
evaluation of Kubo formulas, we develop and evaluate a
consistent approximation scheme that allows us to calculate the
magnetoconductivity tensor for a high-mobility two-dimensional
electron system, subjected to a weak periodic potential
modulation in one lateral direction, under due consideration of
anisotropic impurity scattering. We demonstrate that our
approach avoids the inconsistencies observed with previous
calculations based on a c-number approximation for the self-
energy operator, and that it is able to reproduce, with
reasonable assumptions for the finite-range impurity
potentials, nearly quantitatively the experimental results for
all components of the magnetoresistance tensor in the regime of
moderate and strong magnetic fields, which are characterized by
commensurability and Shubnikov-de Haas oscillations,
respectively.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany
Identifiers:ISI:000179080800100
ISSN:0163-1829
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