Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001)
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 freque...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
|
| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/4/043031 |
| _version_ | 1797751653145772032 |
|---|---|
| author | F Fromm M H Oliveira Jr A Molina-Sánchez M Hundhausen J M J Lopes H Riechert L Wirtz T Seyller |
| author_facet | F Fromm M H Oliveira Jr A Molina-Sánchez M Hundhausen J M J Lopes H Riechert L Wirtz T Seyller |
| author_sort | F Fromm |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:51:41Z |
| format | Article |
| id | doaj.art-739cb0819fb44e638b6a2d1f5e945a46 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:51:41Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-739cb0819fb44e638b6a2d1f5e945a462023-08-08T11:08:38ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115404303110.1088/1367-2630/15/4/043031Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001)F Fromm0M H Oliveira Jr1A Molina-Sánchez2M Hundhausen3J M J Lopes4H Riechert5L Wirtz6T Seyller7Lehrstuhl für Technische Physik, Universität Erlangen-Nürnberg , Erwin-Rommel-Strasse 1, D-91058 Erlangen, GermanyPaul-Drude-Institut für Festkörperelektronik , Hausvogteiplatz 5-7, D-10117 Berlin, GermanyPhysics and Material Sciences Research Unit, University of Luxembourg , Campus Limpertsberg, L-1511 Luxembourg, Luxembourg; Department of ISEN, Institute for Electronics , Microelectronics, and Nanotechnology (IEMN), CNRS UMR 8520, F-59652 Villeneuve d'Ascq Cedex, FranceLehrstuhl für Technische Physik, Universität Erlangen-Nürnberg , Erwin-Rommel-Strasse 1, D-91058 Erlangen, GermanyPaul-Drude-Institut für Festkörperelektronik , Hausvogteiplatz 5-7, D-10117 Berlin, GermanyPaul-Drude-Institut für Festkörperelektronik , Hausvogteiplatz 5-7, D-10117 Berlin, GermanyPhysics and Material Sciences Research Unit, University of Luxembourg , Campus Limpertsberg, L-1511 Luxembourg, Luxembourg; Department of ISEN, Institute for Electronics , Microelectronics, and Nanotechnology (IEMN), CNRS UMR 8520, F-59652 Villeneuve d'Ascq Cedex, FranceInstitut für Physik, Technische Universität Chemnitz , Reichenhainer Straße 70, D-09126 Chemnitz, GermanyWe 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.https://doi.org/10.1088/1367-2630/15/4/043031 |
| spellingShingle | F Fromm M H Oliveira Jr A Molina-Sánchez M Hundhausen J M J Lopes H Riechert L Wirtz T Seyller Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001) New Journal of Physics |
| title | Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001) |
| title_full | Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001) |
| title_fullStr | Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001) |
| title_full_unstemmed | Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001) |
| title_short | Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001) |
| title_sort | contribution of the buffer layer to the raman spectrum of epitaxial graphene on sic 0001 |
| url | https://doi.org/10.1088/1367-2630/15/4/043031 |
| work_keys_str_mv | AT ffromm contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT mholiveirajr contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT amolinasanchez contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT mhundhausen contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT jmjlopes contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT hriechert contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT lwirtz contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 AT tseyller contributionofthebufferlayertotheramanspectrumofepitaxialgrapheneonsic0001 |