Hunting for topological phases amidst Hofstadter butterflies and disordered landscapes

by Prof. Smitha Vishveshwara

University Of Illinois, Urbana-Champaign
at Condensed Matter Seminar

Thu, 13 May 2021, 17:15
Zoom only *** note the date/time change***

Abstract

In this talk, I will discuss rich topological behavior in two related models – the Majorana wire and a Su-Schrieffer-Heeger ladder- in the presence of potential energy landscapes. A brief introduction of the two models and of techniques that directly provide information on edge-state properties will form the starting point for obtaining topological phase diagrams in these models. In the case of these systems subject to a quasiperiodic potential, a beautiful topological phase diagram emerges mimicking Hofstadter’s butterfly patterns. In the case of disordered potential landscapes, Anderson localization physics informs the behavior of the disordered topological phase diagram. Finally, I will discuss the possible implementation of this physics in a variety of experimental systems, including solid state, cold atomic and electro-mechanical settings


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https://us02web.zoom.us/j/88285954139?pwd=dUQxVXloa3FoRU1BS0Fzd2tLUjZyQT09

Created on 07-05-2021 by Meidan, Dganit (dganit)
Updaded on 13-05-2021 by Meidan, Dganit (dganit)