Two-Dimensional Analysis of the Double-Resonant 2D Raman Mode in Bilayer Graphene

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Herziger F, Calandra M, Gava P, May P, Lazzeri M, Mauri F, Maultzsch J
Zeitschrift: Physical Review Letters
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2014
Band: 113
Heftnummer: 18
ISSN: 0031-9007


Abstract


By computing the double-resonant Raman scattering cross section completely from first principles and including the electron-electron interaction at the GW level, we unravel the dominant contributions for the double-resonant 2D mode in bilayer graphene. We show that, in contrast to previous works, the so-called inner processes are dominant and that the 2D-mode line shape is described by three dominant resonances around the K point. We show that the splitting of the transversal optical (TO) phonon branch in the Gamma-K direction, as large as 12 cm(-1) in the GW approximation, is of great importance for a thorough description of the 2D-mode line shape. Finally, we present a method to extract the TO phonon splitting and the splitting of the electronic bands from experimental data.



FAU-Autoren / FAU-Herausgeber

Maultzsch, Janina Prof. Dr.
Lehrstuhl für Experimentalphysik


Autor(en) der externen Einrichtung(en)
Technische Universität Berlin
University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC)


Zitierweisen

APA:
Herziger, F., Calandra, M., Gava, P., May, P., Lazzeri, M., Mauri, F., & Maultzsch, J. (2014). Two-Dimensional Analysis of the Double-Resonant 2D Raman Mode in Bilayer Graphene. Physical Review Letters, 113(18). https://dx.doi.org/10.1103/PhysRevLett.113.187401

MLA:
Herziger, Felix, et al. "Two-Dimensional Analysis of the Double-Resonant 2D Raman Mode in Bilayer Graphene." Physical Review Letters 113.18 (2014).

BibTeX: 

Zuletzt aktualisiert 2018-30-06 um 11:23