Organized Current Patterns in Disordered Conductors

Details Organized Current Patterns in Disordered Conductors Organized Current Patterns in Disordered Conductors

2008-03-30

arxiv.org/abs/0803.4307v1

Phys. Rev. B 77, 201407(R) (2008)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.77.201407

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 micron-scale evaporated wires. These patterns originate from the most efficient electron scattering by Fourier components of the wire imperfections with wavefronts along the $\pm 45^{\circ}$ 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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