Collective modes of the massless Dirac plasma
| dc.creator | Sarma, S. Das | |
| dc.creator | Hwang, E. H. | |
| dc.date | 2009-02-22 | |
| dc.date | 2009-02-23 | |
| dc.date.accessioned | 2026-07-07T13:17:02Z | |
| dc.date.available | 2026-07-07T13:17:02Z | |
| dc.description | We develop a theory for the long-wavelength plasma oscillation of a collection of charged massless Dirac particles in a solid, as occurring for example in doped graphene layers, interacting via the long-range Coulomb interaction. We find that the long-wavelength plasmon frequency in such a doped massless Dirac plasma is explicitly non-classical in all dimensions with the plasma frequency being proportional to \hbar^{-1/2}. We also show that the long wavelength plasma frequency of the D-dimensional superlattice made from such a plasma does not agree with the corresponding (D + 1)-dimensional bulk plasmon frequency. We compare and contrast such Dirac plasmons with the well-studied regular palsmons in metals and doped semiconductors which manifest the usual classical long wavelength plasma oscillation. | |
| dc.description | 5 pages | |
| dc.identifier | https://arxiv.org/abs/0902.3822 | |
| dc.identifier | http://arxiv.org/abs/0902.3822 | |
| dc.identifier | Phys. Rev. Lett. 102, 206412 (2009) | |
| dc.identifier | doi:10.1103/PhysRevLett.102.206412 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/230983 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Materials Science | |
| dc.title | Collective modes of the massless Dirac plasma | |
| dc.type | text |