Publication
Physical Review Letters
Paper

Density-of-states anomalies in a disordered conductor: A tunneling study

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Abstract

Results of single-particle tunneling experiments performed on films of indium oxide are presented. The zero-bias anomalies change character with decreasing thickness from a three-dimensional behavior to a logarithmic energy dependence. Theoretical consideration suggest a crossover from a lnV to a V12 correction to the density of states at a thickness-dependent energy. In the V12 range, where the sample exhibits a three-dimensional density-of-states anomaly, its transport properties may still be two dimensional. These expectations are experimentally confirmed. © 1982 The American Physical Society.

Date

13 Sep 1982

Publication

Physical Review Letters

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