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Article: Band structure effects on one-dimensional resonant tunneling in STM tips made of carbon nanotubes

TitleBand structure effects on one-dimensional resonant tunneling in STM tips made of carbon nanotubes
Authors
Issue Date2006
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2006, v. 73 n. 23 How to Cite?
AbstractIn recent experiments, attempts were made to use carbon nanotubes to replace the normal metal tips in the scanning tunneling microscope (STM), and stable atomic images were observed. However, does the one-dimensional characteristic band structure of the carbon nanotube (CNT) affect the tunneling? We present a theoretical analysis of the one-dimensional resonance tunneling model using the nonequilibrium Green's function method. The results clearly imply that the Van Hove singularities of the CNT probe play an important role in the tunneling process. The resonance curve is quite different from the one with a metallic tip; new peaks and peak splittings are induced. So these characteristics must be considered seriously if one uses a nanoprobe as the STM tip. We also notice that a sharp peak will appear near the first Van Hove singularity, which resembles the Kondo peak. © 2006 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/175020
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGao, Jen_US
dc.contributor.authorSun, Qen_US
dc.contributor.authorXie, XCen_US
dc.contributor.authorGao, Hen_US
dc.date.accessioned2012-11-26T08:48:48Z-
dc.date.available2012-11-26T08:48:48Z-
dc.date.issued2006en_US
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2006, v. 73 n. 23en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://hdl.handle.net/10722/175020-
dc.description.abstractIn recent experiments, attempts were made to use carbon nanotubes to replace the normal metal tips in the scanning tunneling microscope (STM), and stable atomic images were observed. However, does the one-dimensional characteristic band structure of the carbon nanotube (CNT) affect the tunneling? We present a theoretical analysis of the one-dimensional resonance tunneling model using the nonequilibrium Green's function method. The results clearly imply that the Van Hove singularities of the CNT probe play an important role in the tunneling process. The resonance curve is quite different from the one with a metallic tip; new peaks and peak splittings are induced. So these characteristics must be considered seriously if one uses a nanoprobe as the STM tip. We also notice that a sharp peak will appear near the first Van Hove singularity, which resembles the Kondo peak. © 2006 The American Physical Society.en_US
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_US
dc.titleBand structure effects on one-dimensional resonant tunneling in STM tips made of carbon nanotubesen_US
dc.typeArticleen_US
dc.identifier.emailGao, J: jhgao@hku.hken_US
dc.identifier.authorityGao, J=rp00698en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1103/PhysRevB.73.235421en_US
dc.identifier.scopuseid_2-s2.0-33745303960en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33745303960&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume73en_US
dc.identifier.issue23en_US
dc.identifier.isiWOS:000238696600143-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridGao, J=14021339900en_US
dc.identifier.scopusauthoridSun, Q=34572810700en_US
dc.identifier.scopusauthoridXie, XC=13502915800en_US
dc.identifier.scopusauthoridGao, H=7402971240en_US

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