Anomaly of Optical Phonon in Monolayer Graphene
Year: 2006
Type: article
Abstract: The frequency shift and broadening of long-wavelength optical phonons due to interactions with electrons are calculated in a monolayer graphene as a function of the electron density. The broadening disappears and the frequency shift exhibits a logarithmic singularity when the Fermi energy is half of the energy of the optical phonon. The shift increases in proportion to the Fermi energy for sufficiently high electron density.
Author: Tsuneya Ando
Institution: Tokyo Institute of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Funder: Tokyo Institute of Technology
OpenAlex ID: W2003527655