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Quantum inductance and negative electrochemical capacitance at finite frequency | | J. Wang
; B.G. Wang
; H. Guo
; | | Date: |
16 Jan 2007 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | | 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. | | Source: | arXiv, cond-mat/0701360 | | Services: | Forum | Review | PDF | Favorites | |
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