Abstract
We report on both experimental and theoretical study of conduction‐electron spin polarization dynamics achieved by pulsed optical pumping at room temperature in GaAs1−xNx alloys with a small nitrogen content (x = 2.1, 2.7, 3.5%). It is found that the photoluminescence (PL) circular polarization reaches 40–45% and this giant value persists within 2 ns. The results are explained by spin‐dependent capture of free conduction electrons on deep paramagnetic centers. We have developed a nonlinear theory of spin dynamics in the coupled system of spin‐polarized free and localized carriers that describes the experimental dependencies, in particular, electron spin quantum beats observed in a transverse magnetic field.
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.
