Nonlinear Quantum Capacitance

Details Nonlinear Quantum Capacitance Nonlinear Quantum Capacitance

1999-02-23

arxiv.org/abs/cond-mat/9902309v1

Appl. Phys. Lett. Vol.74, 2887 (1999).

Physics

Condensed Matter

Scientific paper

10.1063/1.124047

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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