Hydrodynamic collective modes in graphene
Mesoscale and Nanoscale Physics
2021-03-22 v2 Materials Science
Strongly Correlated Electrons
Fluid Dynamics
Plasma Physics
Abstract
Collective behavior is one of the most intriguing aspects of the hydrodynamic approach to electronic transport. Here we provide a consistent, unified calculation of the dispersion relations of the hydrodynamic collective modes in graphene. Taking into account viscous effects, we show that the hydrodynamic sound mode in graphene becomes overdamped at sufficiently large momentum scales. Extending the linearized theory beyond the hydrodynamic regime, we connect the diffusive hydrodynamic charge density fluctuations with plasmons.
Cite
@article{arxiv.2011.03806,
title = {Hydrodynamic collective modes in graphene},
author = {B. N. Narozhny and I. V. Gornyi and M. Titov},
journal= {arXiv preprint arXiv:2011.03806},
year = {2021}
}
Comments
17 pages, 11 figures