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Article: Electrochemical capacitance of a leaky nanocapacitor

TitleElectrochemical capacitance of a leaky nanocapacitor
Authors
KeywordsPhysics
Issue Date1999
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter and Materials Physics), 1999, v. 60 n. 24, p. 16730-16740 How to Cite?
AbstractWe report a detailed theoretical investigation on electrochemical capacitance of a nanoscale capacitor where there is a dc coupling between the two conductors. For this “leaky” quantum capacitor, we have derived general analytic expressions of the linear and second-order nonlinear electrochemical capacitance within a first-principles quantum theory in the discrete potential approximation. Linear and nonlinear capacitance coefficients are also derived in a self-consistent manner without the latter approximation and the self-consistent analysis is suitable for numerical calculations. At linear order, the full quantum formula improves the semiclassical analysis in the tunneling regime. At nonlinear order that has not been studied before for leaky capacitors, the nonlinear capacitance and nonlinear nonequilibrium charge show interesting behavior. Our theory allows the investigation of crossover of capacitance from a full quantum to classical regimes as the distance between the two conductors is changed.
Persistent Identifierhttp://hdl.handle.net/10722/43280
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhao, Xen_HK
dc.contributor.authorWang, Jen_HK
dc.contributor.authorGuo, Hen_HK
dc.date.accessioned2007-03-23T04:42:46Z-
dc.date.available2007-03-23T04:42:46Z-
dc.date.issued1999en_HK
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics), 1999, v. 60 n. 24, p. 16730-16740en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43280-
dc.description.abstractWe report a detailed theoretical investigation on electrochemical capacitance of a nanoscale capacitor where there is a dc coupling between the two conductors. For this “leaky” quantum capacitor, we have derived general analytic expressions of the linear and second-order nonlinear electrochemical capacitance within a first-principles quantum theory in the discrete potential approximation. Linear and nonlinear capacitance coefficients are also derived in a self-consistent manner without the latter approximation and the self-consistent analysis is suitable for numerical calculations. At linear order, the full quantum formula improves the semiclassical analysis in the tunneling regime. At nonlinear order that has not been studied before for leaky capacitors, the nonlinear capacitance and nonlinear nonequilibrium charge show interesting behavior. Our theory allows the investigation of crossover of capacitance from a full quantum to classical regimes as the distance between the two conductors is changed.en_HK
dc.format.extent169813 bytes-
dc.format.extent25600 bytes-
dc.format.extent5108 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleElectrochemical capacitance of a leaky nanocapacitoren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=60&issue=24&spage=16730&epage=16740&date=1999&atitle=Electrochemical+capacitance+of+a+leaky+nanocapacitoren_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.60.16730en_HK
dc.identifier.scopuseid_2-s2.0-0001754222-
dc.identifier.hkuros47558-
dc.identifier.isiWOS:000084791300073-

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