Hydrodynamic collective modes in graphene
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 hydrod...
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| Veröffentlicht in: | Physical review. B 2021-03, Vol.103 (11), p.1, Article 115402 |
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| container_title | Physical review. B |
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| creator | Narozhny, B. N. Gornyi, I. V. Titov, M. |
| description | 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. |
| doi_str_mv | 10.1103/PhysRevB.103.115402 |
| format | Article |
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| ispartof | Physical review. B, 2021-03, Vol.103 (11), p.1, Article 115402 |
| issn | 2469-9950 2469-9969 |
| language | eng |
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| source | American Physical Society Journals |
| subjects | Charge density Electron transport Graphene Plasmons |
| title | Hydrodynamic collective modes in graphene |
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