Journal Article

FZJ-2015-01932

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Approaching Truly Freestanding Graphene: The Structure of Hydrogen-Intercalated Graphene on 6H−SiC(0001)

Sforzini, J. (Corresponding Author)FZJ* ; Nemec, L. ; Denig, T. ; Stadtmüller, B. ; Lee, T.-L. ; Kumpf, C.FZJ* ; Subach, S.FZJ* ; Starke, U. ; Rinke, P. ; Blum, V. ; Posseik, F.FZJ* ; Tautz, F. S.FZJ*

2015
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/9210  doi:10.1103/PhysRevLett.114.106804

Abstract: We measure the adsorption height of hydrogen-intercalated quasifreestanding monolayer graphene on the (0001) face of 6H silicon carbide by the normal incidence x-ray standing wave technique. A density functional calculation for the full (63√×63√)−R30° unit cell, based on a van der Waals corrected exchange correlation functional, finds a purely physisorptive adsorption height in excellent agreement with experiments, a very low buckling of the graphene layer, a very homogeneous electron density at the interface, and the lowest known adsorption energy per atom for graphene on any substrate. A structural comparison to other graphenes suggests that hydrogen-intercalated graphene on 6H−SiC(0001) approaches ideal graphene.

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Contributing Institute(s):

1. Quantum Nanoscience (PGI-3)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)

Appears in the scientific report 2015

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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