Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session B23: Disorder and Topological Defects in Topological Phases
11:30 AM–2:30 PM,
Monday, March 6, 2023
Room: Room 215
Sponsoring
Unit:
DCMP
Chair: Raquel Queiroz, Columbia University
Abstract: B23.00014 : Computation of topological phase diagram of amorphous BixSb1-x 2d alloys using artificial neural networks*
2:06 PM–2:18 PM
Presenter:
Alejandro J Uria Alvarez
(Universidad Autonoma de Madrid)
Authors:
Alejandro J Uria Alvarez
(Universidad Autonoma de Madrid)
Juan José Palacios
(Univ Autonoma de Madrid)
We now apply this methodology to a realistic model of 2d bismuth-antimony alloys. Instead of modelling the alloy with the virtual crystal approximation, we use a Slater-Koster description of the bonds to allow for statistical variance. Training a neural network appropriately, we are able to identify the critical concentrations for different allotropes of the crystalline alloy. As we amorphize the solid, we show that even when the localized states close the gap, there are still topological states present in the amorphous phase.
*PID2019-109539GB-C43MDM-2014-0377-18-1
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