Abstract
The symmetry of the lowest conduction band minimum (CBM) in type-II (GaAs) n (AlAs) n short-period superlattices (SL) was investigated by photoluminescence (PL) decay, PL excitation (PLE) and PL under uniaxial compressive stress. The results show that for n ⩾ 4, the CBM is in the center of the SL Brillouin zone (BZ) and the wave function is mainly derived from the bulk X z state. For n ⩽ 3, the CBM is away from the center of the SL BZ, and derives mainly from the bulk X x, y states. Interface disorder plays an essential role in both the transition probabilities and the energy levels.
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.
