Beyond double-resonant Raman scattering: Ultraviolet Raman spectroscopy on graphene, graphite, and carbon nanotubes

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Tyborski C, Herziger F, Gillen R, Maultzsch J
Zeitschrift: Physical Review B
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2015
Band: 92
Heftnummer: 4
ISSN: 1098-0121


Abstract


We present an analysis of deep-UV Raman measurements of graphite, graphene, and carbon nanotubes. For excitation energies above the strong optical absorption peak at the M point in the Brillouin zone (approximate to 4.7 eV), we partially suppress double-resonant scattering processes and observe the two-phonon density of states of carbon nanomaterials. The measured peaks are assigned to contributions from LO, TO, and LA phonon branches, supported by calculations of the phonon dispersion. Moreover, we gain access to the infrared-active E-1u mode in graphite. By lowering the excitation energy and thus allowing double-resonant scattering processes, we demonstrate the rise of the 2D mode in graphite with ultrashort phonon wave vectors.


FAU-Autoren / FAU-Herausgeber

Gillen, Roland
Lehrstuhl für Experimentalphysik
Maultzsch, Janina Prof. Dr.
Lehrstuhl für Experimentalphysik


Autor(en) der externen Einrichtung(en)
Technische Universität Berlin


Zitierweisen

APA:
Tyborski, C., Herziger, F., Gillen, R., & Maultzsch, J. (2015). Beyond double-resonant Raman scattering: Ultraviolet Raman spectroscopy on graphene, graphite, and carbon nanotubes. Physical Review B, 92(4). https://dx.doi.org/10.1103/PhysRevB.92.041401

MLA:
Tyborski, Christoph, et al. "Beyond double-resonant Raman scattering: Ultraviolet Raman spectroscopy on graphene, graphite, and carbon nanotubes." Physical Review B 92.4 (2015).

BibTeX: 

Zuletzt aktualisiert 2018-23-11 um 12:38