Abstract
The electronic and optical properties of GaAs/AlAs superlattices grown in the [311] direction are investigated in the framework of an empirical tight-binding model which includes second-neighbor interactions. The [311] superlattices are of great interest because of their non-flat interfaces and because the periodic corrugation which appears gives rise to a lateral confinement. This results in the formation of quantum wires which present a pronounced degree of optical anisotropy. The characteristics and the energy gap value of these wires are studied as functions of the layer thickness and the differences with [001]-grown superlattices are discussed. The calculated cross-over of Γ- and X-like levels is in good agreement with the experimental observations. The nature of the lowest conduction states is explained in terms of the symmetry of the superlattice
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.
