Open AccessScattering of Rydberg excitons by phonon-plasmon modes
Author(s) -
H. Stolz,
D. Semkat
Publication year - 2021
Publication title -
journal of physics. condensed matter
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 228
eISSN - 1361-648X
pISSN - 0953-8984
DOI - 10.1088/1361-648x/ac16aa
Subject(s) - rydberg formula , laser linewidth , plasmon , exciton , scattering , physics , atomic physics , phonon , principal quantum number , condensed matter physics , electron density , electron , phonon scattering , plasma , quantum , quantum mechanics , ionization , laser , ion , quantum dissipation
We propose a new scattering mechanism of Rydberg excitons, i.e., those with high principal quantum numbers, namely scattering by coupled LO phonon-plasmon modes, which becomes possible due to small differences in energies of the states due to different quantum defects. Already in very low-density electron–hole plasmas these provide a substantial contribution to the excitonic linewidth. This effect should allow determining plasma densities by a simple line shape analysis. Whenever one expects that low-density electron–hole plasma is present the plasmon induced broadening is of high significance and must be taken into account in the interpretation.