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Approaching ideal graphene: The structur...
Sforzini, J....
Approaching ideal graphene: The structure of hydrogen-intercalated graphene on 6H-SiC(0001) by Sforzini, J. ( Author )
N.A
18-11-2014
We measure the adsorption height of hydrogen-intercalated quasi-free-standing 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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Article
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36.88 KB
English
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MYR 0.01
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https://arxiv.org/abs/1411.4753
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