Journal Article

FZJ-2014-03467

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Confinement of Dirac electrons in graphene quantum dots

Jolie, W. (Corresponding Author) ; Craes, F. ; Petrović, M. ; Atodiresei, N.FZJ* ; Caciuc, V.FZJ* ; Blügel, S.FZJ* ; Kralj, M. ; Michely, T. ; Busse, C.

2014
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/9125  doi:10.1103/PhysRevB.89.155435

Abstract: We observe spatial confinement of Dirac states on epitaxial graphene quantum dots with low-temperature scanning tunneling microscopy after using oxygen as an intercalant to suppress the surface state of Ir(111) and to effectively decouple graphene from its metal substrate. We analyze the confined electronic states with a relativistic particle-in-a-box model and find a linear dispersion relation. The oxygen-intercalated graphene is p doped [ED=(0.64±0.07) eV] and has a Fermi velocity close to the one of free-standing graphene [vF=(0.96±0.07)×106 m/s].

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 422 - Spin-based and quantum information (POF2-422) (POF2-422)

Appears in the scientific report 2014

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Database coverage:
; ; ; Current Contents - Social and Behavioral Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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