Revisiting phonon-phonon scattering in single-layer graphene

Phonon self-energy corrections to nonzero wave-vector phonon modes in single-layer graphene.

Phonon self-energy corrections have mostly been studied theoretically and experimentally for phonon modes with zone-center (q=0) wave vectors. Here, gate-modulated Raman scattering is used to study phonons of a single layer of graphene originating from a double-resonant Raman process with q≠0. The observed phonon renormalization effects are different from what is observed for the zone-center q=...

Phonon Transport in Graphene

Properties of phonons – quanta of the crystal lattice vibrations – in graphene have attracted strong attention of the physics and engineering communities. Acoustic phonons are the main heat carriers in graphene near room temperature while optical phonons are used for counting the number of atomic planes in Raman experiments with few-layer graphene. It was shown both theoretically and experiment...

Two-phonon scattering in graphene in the quantum Hall regime

A. M. Alexeev,1 R. R. Hartmann,2 and M. E. Portnoi1,3,* 1School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom 2De La Salle University-Manila, 2401 Taft Avenue, 1004 Manila, Philippines 3International Institute of Physics, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil (Received 28 April 2015; revised manuscript received 31 October 2015; published...

Parity conservation in electron-phonon scattering in zigzag graphene nanoribbon

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Spectral phonon conduction and dominant scattering pathways in graphene