Abstract
Coupling of acoustic phonons to excitons in small In0.4Ga0.6As/GaAs quantum rings (QRs) is investigated. The temperature dependence on the spectral distribution of the excitonic single QR luminescence is presented and discussed. The contributions of piezoelectric and deformation potential couplings are specified. We find that QR spectra exhibit non‐Lorentzian line shapes including sharp zero‐phonon lines with broad backgrounds induced by acoustic phonons couplings. The latter are strongly temperature dependent. Coupling via the deformation potential mechanism is found to have the dominant contribution. This involves more energetic phonons and leads to sideband broadenings. Phonons that contribute to piezoelectric coupling have low energies. Their impact is in close proximity to the zero‐phonon line (ZPL) peak.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
