Abstract
The Wannier-Stark localization of asymmetric double well superlattices (ADW-SLs) has been investigated by low-temperature photocurrent spectroscopy. The ADW-SLs consist of arrays of asymmetric double quantum wells formed by coupling of two different size wells. Reflecting the difference in the eigenenergies of the two wells, the occurrence of the Stark-ladder transitions is, in principle, characterized by the superposition of two fan diagrams. Hence, four ±1st-order spatially indirect transitions are expected to exist. However, they are experimentally observed only partially. This selectivity is interpreted by considering the coupling pattern between two wells in the ADW-SLs. The control of the coupling pattern is a new concept to design SL structures and its Wannier-Stark localization.
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.
