| Autor: |
F Fromm, M H Oliveira Jr, A Molina-Sánchez, M Hundhausen, J M J Lopes, H Riechert, L Wirtz, T Seyller |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
New Journal of Physics, Vol 15, Iss 4, p 043031 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/15/4/043031 |
| Popis: |
We report a Raman study of the so-called buffer layer with $(6\sqrt 3\times 6\sqrt 3)R30^{\circ }$ periodicity which forms the intrinsic interface structure between epitaxial graphene and SiC(0001). We show that this interface structure leads to a non-vanishing signal in the Raman spectrum at frequencies in the range of the D- and G-band of graphene and discuss its shape and intensity. Ab initio phonon calculations reveal that these features can be attributed to the vibrational density of states of the buffer layer. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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