Confinement of Dirac electrons in graphene quantum dots (CROSBI ID 205483)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Jolie, Wouter ; Craes, Fabian ; Petrović, Marin ; Atodiresei, Nicolae ; Caciuc, Vasile, Blügel, Stefan ; Kralj, Marko ; Michely, Thomas ; Busse, Carsten
engleski
Confinement of Dirac electrons in graphene quantum dots
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].
Graphene ; Dirac electrons ; Quantum dots ; Confinement ; Scanning tunneling microscopy
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
89 (15)
2014.
155435-1-155435-6
objavljeno
1098-0121
10.1103/PhysRevB.89.155435