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arXiv · 1409.0457

Correlation between morphology and transport properties of quasi-free-standing monolayer graphene

Yuya Murata·Torge Mashoff·Makoto Takamura·Shinichi Tanabe·Hiroki Hibino·Fabio Beltram·Stefan Heun
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Abstract

We investigate the morphology of quasi-free-standing monolayer graphene (QFMLG) formed at several temperatures by hydrogen intercalation and discuss its relationship with transport properties. Features corresponding to incomplete hydrogen intercalation at the graphene-substrate interface are observed by scanning tunneling microscopy on QFMLG formed at 600 and 800°C. They contribute to carrier scattering as charged impurities. Voids in the SiC substrate and wrinkling of graphene appear at 1000°C, and they decrease the carrier mobility significantly.

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Yuya Murata, Torge Mashoff, Makoto Takamura, Shinichi Tanabe, Hiroki Hibino, Fabio Beltram, Stefan Heun. 2014-11-19. Correlation between morphology and transport properties of quasi-free-standing monolayer graphene. https://doi.org/10.1063/1.4902988

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