Quantum inductance and negative electrochemical capacitance at finite frequency
Mesoscale and Nanoscale Physics
2009-11-13 v1
Abstract
We report on theoretical investigations of frequency dependent quantum capacitance. It is found that at finite frequency a quantum capacitor can be characterized by a classical RLC circuit with three parameters: a static electrochemical capacitance, a charge relaxation resistance, and a quantum inductance. The quantum inductance is proportional to the characteristic time scale of electron dynamics and due to its existence, the time dependent current can accumulate a phase delay and becomes lagging behind the applied ac voltage, leading to a negative effective capacitance.
Cite
@article{arxiv.cond-mat/0701360,
title = {Quantum inductance and negative electrochemical capacitance at finite frequency},
author = {J. Wang and B. G. Wang and H. Guo},
journal= {arXiv preprint arXiv:cond-mat/0701360},
year = {2009}
}