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Quantum Theory of Multisubband Plasmon-Phonon Coupling
- Source :
- Photonics 7(1), 19 (2020)
- Publication Year :
- 2019
-
Abstract
- We present a theoretical description of the coupling between longitudinal optical phonons and collective excitations of a two-dimensional electron gas. By diagonalizing the Hamiltonian of the system, including Coulomb electron-electron and Fr\"ohlich interactions, we observe the formation of multisubband polarons, mixed states partially phonon and partially multisubband plasmon, characterized by a coupling energy which is a significant fraction, up to ~40%, of the phonon energy. We demonstrate that multisubband plasmons and longitudinal optical phonons are in the ultra-strong coupling regime in several III-V and II-VI material systems.<br />Comment: 13 pages, 4 figures
Details
- Database :
- arXiv
- Journal :
- Photonics 7(1), 19 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.1912.12156
- Document Type :
- Working Paper