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Spectroscopy of local density of states fluctuations in a disordered conductor

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<mark>Journal publication date</mark>1/10/1996
<mark>Journal</mark>EPL
Issue number1
Volume36
Number of pages6
Pages (from-to)61-66
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

The local density of states of a degenerate semiconductor is investigated at low magnetic fields by resonant tunneling through a discrete localized energy level. Mesoscopic fluctuations of the local density of states below the Fermi level are imaged as temperature-insensitive fine structure in the tunneling current. These fluctuations are attributed to quantum interference of diffusive electron waves in the three-dimensional disordered system.