DOI: 10.1063/1.3517505. Structure of few-layer epitaxial graphene on 6H-SiC(0001) at atomic resolution

Structure of few-layer epitaxial graphene on 6H-SiC(0001) at atomic resolution

10.1063/1.3517505

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Using directly interpretable atomic-resolution cross-sectional scanning transmission electron microscopy, we have investigated the structure of few-layer epitaxial graphene (EG) on 6H-SiC(0001). We show that the buried interface layer possesses a lower average areal density of carbon atoms than graphene, indicating that it is not a graphenelike sheet with the 63×63R30° structure. The EG interlayer spacings are found to be considerably larger than that of the bulk graphite and the surface of the SiC(0001) substrate, often treated as relaxed, is found to be strained. Discontinuity of the graphene layers above the SiC surface steps is observed, in contradiction with the commonly believed continuous coverage.

Bibliography

Weng, X., Robinson, J. A., Trumbull, K., Cavalero, R., Fanton, M. A., & Snyder, D. (2010). Structure of few-layer epitaxial graphene on 6H-SiC(0001) at atomic resolution. Applied Physics Letters, 97(20).

Authors 6

Xiaojun Weng (first)
Joshua A. Robinson (additional)
Kathleen Trumbull (additional)
Randall Cavalero (additional)
Mark A. Fanton (additional)
David Snyder (additional)

References 27 Referenced 31

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See supplementary material at http://dx.doi.org/10.1063/1.3517505 for detailed discussions on the structure and composition proposed for the buried interface by earlier studies.
10.1016/0304-3991(93)90046-Z / Ultramicroscopy (1993)
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Dates

Type	When
Created	14 years, 9 months ago (Nov. 17, 2010, 6:14 p.m.)
Deposited	2 years, 1 month ago (July 31, 2023, 5:07 a.m.)
Indexed	1 month ago (July 30, 2025, 6:56 a.m.)
Issued	14 years, 9 months ago (Nov. 15, 2010)
Published	14 years, 9 months ago (Nov. 15, 2010)
Published Online	14 years, 9 months ago (Nov. 17, 2010)
Published Print	14 years, 9 months ago (Nov. 15, 2010)

Funders 0

None

BibTeX

@article{Weng_2010, title={Structure of few-layer epitaxial graphene on 6H-SiC(0001) at atomic resolution}, volume={97}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.3517505}, DOI={10.1063/1.3517505}, number={20}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Weng, Xiaojun and Robinson, Joshua A. and Trumbull, Kathleen and Cavalero, Randall and Fanton, Mark A. and Snyder, David}, year={2010}, month=nov }

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