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Article: Current plateaus of nonadiabatic charge pump: Multiphoton assisted processes

TitleCurrent plateaus of nonadiabatic charge pump: Multiphoton assisted processes
Authors
KeywordsPhysics
Issue Date2003
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter and Materials Physics), 2003, v. 68 n. 15, p. 155326:1-7 How to Cite?
AbstractWe report a theoretical investigation of quantum parametric charge pump in the nonadiabatic regime at finite pumping frequency and finite driving amplitude. A general and closed-form expression for pumped current is derived in the form of a continuous fraction reflecting the multiphoton processes which are found to play an important role. Our nonperturbative theory predicts a remarkable plateau structure in the pumped current due to these multiphoton assisted processes in a double-barrier quantum well involving only a single pumping potential. A current reversal is found as the resonant level of the pump crosses the Fermi energy of the leads.
Persistent Identifierhttp://hdl.handle.net/10722/43394
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, Ben_HK
dc.contributor.authorWang, Jen_HK
dc.contributor.authorGuo, Hen_HK
dc.date.accessioned2007-03-23T04:44:52Z-
dc.date.available2007-03-23T04:44:52Z-
dc.date.issued2003en_HK
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics), 2003, v. 68 n. 15, p. 155326:1-7en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43394-
dc.description.abstractWe report a theoretical investigation of quantum parametric charge pump in the nonadiabatic regime at finite pumping frequency and finite driving amplitude. A general and closed-form expression for pumped current is derived in the form of a continuous fraction reflecting the multiphoton processes which are found to play an important role. Our nonperturbative theory predicts a remarkable plateau structure in the pumped current due to these multiphoton assisted processes in a double-barrier quantum well involving only a single pumping potential. A current reversal is found as the resonant level of the pump crosses the Fermi energy of the leads.en_HK
dc.format.extent94715 bytes-
dc.format.extent25600 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleCurrent plateaus of nonadiabatic charge pump: Multiphoton assisted processesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=68&issue=15&spage=155326:1&epage=7&date=2003&atitle=Current+plateaus+of+nonadiabatic+charge+pump:+Multiphoton+assisted+processesen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.68.155326en_HK
dc.identifier.scopuseid_2-s2.0-3042781090-
dc.identifier.hkuros84962-
dc.identifier.isiWOS:000186422600086-

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