Hydrodynamic collective modes in graphene
| Autor: | Igor V. Gornyi, Boris Narozhny, Mikhail Titov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Collective behavior
Theory of Condensed Matter FOS: Physical sciences 02 engineering and technology 01 natural sciences law.invention Momentum Condensed Matter - Strongly Correlated Electrons law Dispersion relation 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics Plasmon Physics Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Strongly Correlated Electrons (cond-mat.str-el) Graphene Mode (statistics) Fluid Dynamics (physics.flu-dyn) Charge density Materials Science (cond-mat.mtrl-sci) Physics - Fluid Dynamics 021001 nanoscience & nanotechnology Physics - Plasma Physics Plasma Physics (physics.plasm-ph) Quantum electrodynamics 0210 nano-technology |
| Zdroj: | Physical Review B, 103, 11 Physical Review B, 103 |
| ISSN: | 2469-9950 |
| DOI: | 10.48550/arxiv.2011.03806 |
| Popis: | 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. Comment: 17 pages, 11 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|