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Article: Photon-assisted mesoscopic transport through a toroidal carbon nanotube coupled to normal metal leads

TitlePhoton-assisted mesoscopic transport through a toroidal carbon nanotube coupled to normal metal leads
Authors
KeywordsMesoscopic transport
Carbon nanotube
AC response
Issue Date2004
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physleta
Citation
Physics Letters Section A: General, Atomic and Solid State Physics, 2004, v. 325 n. 5-6, p. 407-414 How to Cite?
AbstractThe mesoscopic transport through a toroidal carbon nanotube (TCN) system applied with ac fields to the electrodes has been investigated by employing the nonequilibrium Green's function (NGF) technique. The Landauer–Büttiker-like formula is presented for numerical calculations of differential conductance and tunneling current. The conductance resonance takes place due to the electrons resonating in the quantum levels of TCN and side-band caused by the external ac fields. The photon-assisted transport can be observed both in conductance oscillation and current oscillation with respect to the magnetic flux. The side peaks and current suppressions are the main effect of photon absorption and emission in the transport procedure. The stair-like current–voltage characteristics are resulted from the quantum nature of TCN and applied microwave fields. The photon–electron pumping effect can be obtained by applying the microwave fields to the leads.
Persistent Identifierhttp://hdl.handle.net/10722/48659
ISSN
2015 Impact Factor: 1.677
2015 SCImago Journal Rankings: 0.755
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhao, HKen_HK
dc.contributor.authorWang, Jen_HK
dc.date.accessioned2008-05-22T04:20:31Z-
dc.date.available2008-05-22T04:20:31Z-
dc.date.issued2004en_HK
dc.identifier.citationPhysics Letters Section A: General, Atomic and Solid State Physics, 2004, v. 325 n. 5-6, p. 407-414en_HK
dc.identifier.issn0375-9601en_HK
dc.identifier.urihttp://hdl.handle.net/10722/48659-
dc.description.abstractThe mesoscopic transport through a toroidal carbon nanotube (TCN) system applied with ac fields to the electrodes has been investigated by employing the nonequilibrium Green's function (NGF) technique. The Landauer–Büttiker-like formula is presented for numerical calculations of differential conductance and tunneling current. The conductance resonance takes place due to the electrons resonating in the quantum levels of TCN and side-band caused by the external ac fields. The photon-assisted transport can be observed both in conductance oscillation and current oscillation with respect to the magnetic flux. The side peaks and current suppressions are the main effect of photon absorption and emission in the transport procedure. The stair-like current–voltage characteristics are resulted from the quantum nature of TCN and applied microwave fields. The photon–electron pumping effect can be obtained by applying the microwave fields to the leads.en_HK
dc.format.extent146967 bytes-
dc.format.extent4247 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physletaen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysics Letters Section A: General, Atomic and Solid State Physics. Copyright © Elsevier BV.en_HK
dc.subjectMesoscopic transporten_HK
dc.subjectCarbon nanotubeen_HK
dc.subjectAC responseen_HK
dc.titlePhoton-assisted mesoscopic transport through a toroidal carbon nanotube coupled to normal metal leadsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0375-9601&volume=325&issue=5-6&spage=407&epage=414&date=2004&atitle=Photon-assisted+mesoscopic+transport+through+a+toroidal+carbon+nanotube+coupled+to+normal+metal+leadsen_HK
dc.identifier.emailZhao, HK: zhaohonk@yahoo.comen_HK
dc.identifier.emailWang, J: jianwang@hkusub.hku.hken_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/j.physleta.2004.04.019en_HK
dc.identifier.scopuseid_2-s2.0-2442668146-
dc.identifier.hkuros98057-
dc.identifier.isiWOS:000221546500014-

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