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J Phys Condens Matter. 2013 Oct 2;25(39):395802. doi: 10.1088/0953-8984/25/39/395802. Epub 2013 Sep 3.

Conductance fluctuations in semiconductor nanostructures.

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1
School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZĀ 85287, USA.

Abstract

Conductance fluctuations have been seen in semiconductors and graphene for quite some time. It has generally been believed that a universality existed in which the conductance variance was the same for variations in energy and magnetic field, although some experiments have questioned this view. Here, we use numerical simulations to show that fluctuations in magneto-conductance are typically smaller than those in energy by as much as a factor of 3. Moreover, the amplitude of the fluctuations in each case varies with the strength of the random potential.

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