File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Spatially resolving edge states of chiral graphene nanoribbons

TitleSpatially resolving edge states of chiral graphene nanoribbons
Authors
Issue Date2011
Citation
Nature Physics, 2011, v. 7, n. 8, p. 616-620 How to Cite?
AbstractA central question in the field of graphene-related research is how graphene behaves when it is patterned at the nanometre scale with different edge geometries. A fundamental shape relevant to this question is the graphene nanoribbon (GNR), a narrow strip of graphene that can have different chirality depending on the angle at which it is cut. Such GNRs have been predicted to exhibit a wide range of behaviour, including tunable energy gaps 1,2 and the presence of one-dimensional (1D) edge states 3-5 with unusual magnetic structure 6,7 . Most GNRs measured up to now have been characterized by means of their electrical conductivity, leaving the relationship between electronic structure and local atomic geometry unclear 8-10 . Here we present a sub-nanometre-resolved scanning tunnelling microscopy (STM) and spectroscopy (STS) study of GNRs that allows us to examine how GNR electronic structure depends on the chirality of atomically well-defined GNR edges. The GNRs used here were chemically synthesized using carbon nanotube (CNT) unzipping methods that allow flexible variation of GNR width, length, chirality, and substrate 11,12 . Our STS measurements reveal the presence of 1D GNR edge states, the behaviour of which matches theoretical expectations for GNRs of similar width and chirality, including width-dependent energy splitting of the GNR edge state. © 2011 Macmillan Publishers Limited. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/334255
ISSN
2023 Impact Factor: 17.6
2023 SCImago Journal Rankings: 8.228
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTao, Chenggang-
dc.contributor.authorJiao, Liying-
dc.contributor.authorYazyev, Oleg V.-
dc.contributor.authorChen, Yen Chia-
dc.contributor.authorFeng, Juanjuan-
dc.contributor.authorZhang, Xiaowei-
dc.contributor.authorCapaz, Rodrigo B.-
dc.contributor.authorTour, James M.-
dc.contributor.authorZettl, Alex-
dc.contributor.authorLouie, Steven G.-
dc.contributor.authorDai, Hongjie-
dc.contributor.authorCrommie, Michael F.-
dc.date.accessioned2023-10-20T06:46:50Z-
dc.date.available2023-10-20T06:46:50Z-
dc.date.issued2011-
dc.identifier.citationNature Physics, 2011, v. 7, n. 8, p. 616-620-
dc.identifier.issn1745-2473-
dc.identifier.urihttp://hdl.handle.net/10722/334255-
dc.description.abstractA central question in the field of graphene-related research is how graphene behaves when it is patterned at the nanometre scale with different edge geometries. A fundamental shape relevant to this question is the graphene nanoribbon (GNR), a narrow strip of graphene that can have different chirality depending on the angle at which it is cut. Such GNRs have been predicted to exhibit a wide range of behaviour, including tunable energy gaps 1,2 and the presence of one-dimensional (1D) edge states 3-5 with unusual magnetic structure 6,7 . Most GNRs measured up to now have been characterized by means of their electrical conductivity, leaving the relationship between electronic structure and local atomic geometry unclear 8-10 . Here we present a sub-nanometre-resolved scanning tunnelling microscopy (STM) and spectroscopy (STS) study of GNRs that allows us to examine how GNR electronic structure depends on the chirality of atomically well-defined GNR edges. The GNRs used here were chemically synthesized using carbon nanotube (CNT) unzipping methods that allow flexible variation of GNR width, length, chirality, and substrate 11,12 . Our STS measurements reveal the presence of 1D GNR edge states, the behaviour of which matches theoretical expectations for GNRs of similar width and chirality, including width-dependent energy splitting of the GNR edge state. © 2011 Macmillan Publishers Limited. All rights reserved.-
dc.languageeng-
dc.relation.ispartofNature Physics-
dc.titleSpatially resolving edge states of chiral graphene nanoribbons-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1038/nphys1991-
dc.identifier.scopuseid_2-s2.0-79961030425-
dc.identifier.volume7-
dc.identifier.issue8-
dc.identifier.spage616-
dc.identifier.epage620-
dc.identifier.eissn1745-2481-
dc.identifier.isiWOS:000293354000013-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats