Abstract
We study scanning gate microscopy (SGM) in open quantum rings obtained from buriedsemiconductor InGaAs/InAlAs heterostructures. By performing a theoretical analysisbased on the Keldysh–Green function approach we interpret the radial fringes observed inexperiments as the effect of randomly distributed charged defects. We associate SGMconductance images with the local density of states (LDOS) of the system. We show thatsuch an association cannot be made with the current density distribution. By varying anexternal magnetic field we are able to reproduce recursive quasi-classical orbits in LDOSand conductance images, which bear the same periodicity as the Aharonov–Bohmeffect.
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.
