Model for organized current patterns in disordered conductors

Y. Japha; O. Entin-Wohlman; T. David; R. Salem; S. Aigner; J. Schmiedmayer; R. Folman

doi:10.1103/PhysRevB.77.201407

Model for organized current patterns in disordered conductors

Y. Japha, O. Entin-Wohlman, T. David, R. Salem, S. Aigner, J. Schmiedmayer, R. Folman

Department of Physics

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

We present a general theory of current deviations in straight current-carrying wires with random imperfections, which quantitatively explains the recent observations of organized patterns of magnetic field corrugations above micrometer-scale evaporated wires. These patterns originate from the most efficient electron scattering by Fourier components of the wire imperfections with wavefronts along the ±45° direction. We show that long-range effects of surface or bulk corrugations are suppressed for narrow wires or wires having an electrically anisotropic resistivity.

Original language	English
Article number	201407
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.77.201407
State	Published - 29 May 2008

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.77.201407

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AU - Entin-Wohlman, O.

AU - David, T.

AU - Salem, R.

AU - Aigner, S.

AU - Schmiedmayer, J.

AU - Folman, R.

PY - 2008/5/29

Y1 - 2008/5/29

N2 - We present a general theory of current deviations in straight current-carrying wires with random imperfections, which quantitatively explains the recent observations of organized patterns of magnetic field corrugations above micrometer-scale evaporated wires. These patterns originate from the most efficient electron scattering by Fourier components of the wire imperfections with wavefronts along the ±45° direction. We show that long-range effects of surface or bulk corrugations are suppressed for narrow wires or wires having an electrically anisotropic resistivity.

AB - We present a general theory of current deviations in straight current-carrying wires with random imperfections, which quantitatively explains the recent observations of organized patterns of magnetic field corrugations above micrometer-scale evaporated wires. These patterns originate from the most efficient electron scattering by Fourier components of the wire imperfections with wavefronts along the ±45° direction. We show that long-range effects of surface or bulk corrugations are suppressed for narrow wires or wires having an electrically anisotropic resistivity.

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Model for organized current patterns in disordered conductors

Abstract

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