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Article: First-principles investigation of transport properties through longitudinal unzipped carbon nanotubes

TitleFirst-principles investigation of transport properties through longitudinal unzipped carbon nanotubes
Authors
KeywordsPhysics
Issue Date2010
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B: Condensed Matter and Materials Physics, 2010, v. 81 n. 4 article no. 045425 How to Cite?
AbstractWe report a first-principles investigation of transport through longitudinal unzipped carbon nanotube based devices. The graphene nanoribbons can be obtained experimentally by unzipping carbon nanotubes in the longitudinal direction. The basic component of our devices is partially unzipped carbon nanotube that consists of graphene nanoribbons and carbon nanotubes as leads. When the edges of graphene are saturated by hydrogen atoms, the system has finite magnetic moment and hence the transport is spin polarized. Our results show that as the Fermi energy is varied the system can change from an insulator to a spin-down half metal, an insulator again, and finally a spin-up half metal. Hence a spin-filter device can be designed from this kind of systems.
Persistent Identifierhttp://hdl.handle.net/10722/81074
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
Funding AgencyGrant Number
government of HKSARHKU 704308P
Funding Information:

We thank W. Ren for useful discussion. We gratefully acknowledge the financial support by a RGC (Grant No. HKU 704308P) from the government of HKSAR.

Grants

 

DC FieldValueLanguage
dc.contributor.authorWang, Ben_HK
dc.contributor.authorWang, Jen_HK
dc.date.accessioned2010-09-06T08:13:27Z-
dc.date.available2010-09-06T08:13:27Z-
dc.date.issued2010en_HK
dc.identifier.citationPhysical Review B: Condensed Matter and Materials Physics, 2010, v. 81 n. 4 article no. 045425en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/81074-
dc.description.abstractWe report a first-principles investigation of transport through longitudinal unzipped carbon nanotube based devices. The graphene nanoribbons can be obtained experimentally by unzipping carbon nanotubes in the longitudinal direction. The basic component of our devices is partially unzipped carbon nanotube that consists of graphene nanoribbons and carbon nanotubes as leads. When the edges of graphene are saturated by hydrogen atoms, the system has finite magnetic moment and hence the transport is spin polarized. Our results show that as the Fermi energy is varied the system can change from an insulator to a spin-down half metal, an insulator again, and finally a spin-up half metal. Hence a spin-filter device can be designed from this kind of systems.-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B: Condensed Matter and Materials Physicsen_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.subjectPhysics-
dc.titleFirst-principles investigation of transport properties through longitudinal unzipped carbon nanotubesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=81&issue=4 article no. 045425&spage=&epage=&date=2010&atitle=First-principles+investigation+of+transport+properties+through+longitudinal+unzipped+carbon+nanotubesen_HK
dc.identifier.emailWang, J: jianwang@hkusub.hku.hken_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.81.045425-
dc.identifier.scopuseid_2-s2.0-77954829092-
dc.identifier.hkuros169493en_HK
dc.identifier.volume81-
dc.identifier.issue4 article no. 045425-
dc.identifier.isiWOS:000274002500107-
dc.relation.projectThe first principle study of local heating and heat transport in nano-devices-

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