Sankalpa Ghosh
Indian Institute of Technology, Delhi
Sankalpa Ghosh is Assistant Professor at the Indian Institute of Technology, Delhi. He completed his PhD from Jawaharlal Nehru University, Delhi. His research interests are quantum hall systems, ultra-cold atoms and Bose–Einstein condensation, and electron transport in Dirac materials (graphene, topological Insulators etc.)
Session 1D - Symposium on “Twistronics”
Manish Jain
Moiré fractals in twistronics
The field of twistronics and Moiré patterns will be introduced. A broad theoretical framework by considering the behaviour of charge carriers in an effective super-lattice potential to understand the single-particle physics in a host of van der Waals hetero-structures (a common acronym for layered materials) which is a frontier research area in electronic materials will be explained (more popularly dubbed as "quantum materials" in modern day literature). The basic physics of Moiré patterns in twisted bilayer graphene will be explained in this framework. Subsequently the recently introduced concept of "Moiré fractals" that provides quantitative information about band structures of large class of super-Moiré systems that consists of two or more Moiré structures under certain specific conditions will be described. How such structures can be observed in experiments will also be explained.