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1. Conductance fluctuations in a quantum wire with a non-uniform scattering potential.

Author

Horsell, D. W., Galaktionov, E. A., Savchenko, A. K., Kretinin, A. V., Ghosh, A., Beere, H. E., and Ritchie, D. A.

Subjects
*NANOWIRES, *ARSENIDES, *MAGNETIC fields, *ELECTRON backscattering, *LANDAU levels
Abstract

We study fluctuations in the conductance of a narrow GaAs/AlGaAs quantum wire. In strong magnetic fields we show that these fluctuations originate from a complex mixture of transport processes. Here back-scattering of electrons is determined by the position in energy of the bulk Landau level. We experimentally resolve a diffusion—tunnelling transition as the Fermi level is moved between integer filling factors. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2007
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