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Classical-to-stochastic Coulomb blockade cross-over in aluminum arsenide wires

J. Moser·S. Roddaro·D. Schuh·M. Bichler·V. Pellegrini·M. Grayson
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Abstract

We report low-temperature differential conductance measurements in aluminum arsenide cleaved-edge overgrown quantum wires in the pinch-off regime. At zero source-drain bias we observe Coulomb blockade conductance resonances that become vanishingly small as the temperature is lowered below $250 {\rm mK}$. We show that this behavior can be interpreted as a classical-to-stochastic Coulomb blockade cross-over in a series of asymmetric quantum dots, and offer a quantitative analysis of the temperature-dependence of the resonances lineshape. The conductance behavior at large source-drain bias is suggestive of the charge density wave conduction expected for a chain of quantum dots.

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J. Moser, S. Roddaro, D. Schuh, M. Bichler, V. Pellegrini, M. Grayson. 2006-03-02. Classical-to-stochastic Coulomb blockade cross-over in aluminum arsenide wires. https://doi.org/10.1103/physrevb.74.193307

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