兰州大学机构库 >物理科学与技术学院
Spatially resolving edge states of chiral graphene nanoribbons
Tao, CG; Jiao, LY; Yazyev, OV; Chen, YC; Feng, JJ; Zhang, XW; Capaz, RB; Tour, JM; Zettl, A; Louie, SG; Dai, HJ; Crommie, MF; Crommie, MF (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
ESI NOTE2017-07-19;Highly Cited Papers
2011-06
Source PublicationNATURE PHYSICS
ISSN1745-2473
Volume7Issue:8Pages:616-620
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.
Subject AreaPhysics
PublisherNATURE PUBLISHING GROUP
DOI10.1038/NPHYS1991
Publication PlaceLONDON
Indexed BySCIE ; ESI
Language英语
First Inst
Funding Project美国国家科学基金项目 ; 美国能源部项目
Project NumberOffice of Naval Research Multidisciplinary University Research Initiative (MURI) [N00014-09-1-1066, N00014-09-1-1064] ; Office of Science, Office of Basic Energy Sciences of the US Department of Energy [DE-AC02-05CH11231] ; National Science Foundation [DMR-0705941] ; Intel ; MARCO MSD ; CNPq ; CAPES ; FAPERJ ; INCT
WOS IDWOS:000293354000013
Funding OrganizationUS NSF ; US DOE
SubtypeArticle
Department
[Tao, Chenggang;
Yazyev, Oleg V.;
Chen, Yen-Chia;
Feng, Juanjuan;
Zhang, Xiaowei;
Capaz, Rodrigo B.;
Zettl, Alex;
Louie, Steven G.;
Crommie, Michael F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA;
[Tao, Chenggang...更多
Citation statistics
Cited Times:539[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/105330
Collection物理科学与技术学院
Corresponding AuthorCrommie, MF (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Recommended Citation
GB/T 7714
Tao, CG,Jiao, LY,Yazyev, OV,et al. Spatially resolving edge states of chiral graphene nanoribbons[J]. NATURE PHYSICS,2011,7(8):616-620.
APA Tao, CG.,Jiao, LY.,Yazyev, OV.,Chen, YC.,Feng, JJ.,...&Crommie, MF .(2011).Spatially resolving edge states of chiral graphene nanoribbons.NATURE PHYSICS,7(8),616-620.
MLA Tao, CG,et al."Spatially resolving edge states of chiral graphene nanoribbons".NATURE PHYSICS 7.8(2011):616-620.
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