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Nonlinear Quantum Capacitance

Baigeng Wang·Xuean Zhao·Jian Wang·Hong Guo
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Abstract

We analyze the nonlinear voltage dependence of elelctrochemical capacitance for nano-scale conductors. This voltage dependence is due to finite density of states of the conductors. We derive an exact expression for the electrochemical capacitance-voltage curve for a parallel plate system. The result suggests a quantum scanning capacitance microscopy at the nano-scale: by inverting the capacitance-voltage expression one is able to deduce the local spectral function of the nano-scale conductor.

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Baigeng Wang, Xuean Zhao, Jian Wang, Hong Guo. 1999-02-23. Nonlinear Quantum Capacitance. https://doi.org/10.1063/1.124047

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