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Restoring a nearly free-standing character of graphene on Ru(0001) by oxygen intercalation.

ABSTRACT: Realization of a free-standing graphene is always a demanding task. Here we use scanning probe microscopy and spectroscopy to study the crystallographic structure and electronic properties of the uniform nearly free-standing graphene layers obtained by intercalation of oxygen monolayer in the "strongly" bonded graphene/Ru(0001) interface. Spectroscopic data show that such graphene layer is heavily p-doped with the Dirac point located at 552?meV above the Fermi level. Experimental data are understood within density-functional theory approach and the observed effects are in good agreement with the theoretical data.

SUBMITTER: Voloshina E

PROVIDER: S-EPMC4745051 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Restoring a nearly free-standing character of graphene on Ru(0001) by oxygen intercalation.

Voloshina Elena E Berdunov Nikolai N Dedkov Yuriy Y

Scientific reports 20160208

Realization of a free-standing graphene is always a demanding task. Here we use scanning probe microscopy and spectroscopy to study the crystallographic structure and electronic properties of the uniform nearly free-standing graphene layers obtained by intercalation of oxygen monolayer in the "strongly" bonded graphene/Ru(0001) interface. Spectroscopic data show that such graphene layer is heavily p-doped with the Dirac point located at 552 meV above the Fermi level. Experimental data are unders ...[more]

PMID: 26852734

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