Seminario CSTCP: "Twistronics and moiré materials" - Dr. Valerio Vitale

Tipologia evento: 
Data evento
Data inizio evento: 
08/06/2022 - 18:00
Data fine evento: 
08/06/2022 - 19:00
Data pubblicazione evento
Pubblicato il: 
Twistronics and moiré materials
Dr. Valerio Vitale
(Imperial College London)

Twistronics is a newly born and rapidly growing field in condensed matter physics that studies how electronic properties of stacked single-layer van der Waals (vdW) materials, e.g. graphene, are affected when applying a twist between the layers. When single-layer vdW materials are stacked on top of one another with a small twist in orientation, the resulting structures may exhibit patterns with periodicity much larger (tens of nanometers) than that of a typical bond-length (angstroms); these patterns are known as moiré patterns. The new moiré length scale leads to interesting emergent physical phenomena. For instance, a graphene bilayer with a twist of 1.1° exhibits flat electronic bands, strong electron correlations, magnetism and superconductivity which are all absent in the constituent monolayer. However, at the moiré scale, the large number of atoms in these systems can make their accurate simulation very challenging, necessitating the development of efficient multiscale methods. In this seminar, I will first give an overview of the field and a brief description of popular moiré materials and their properties, and then I will present a recently developed multiscale approach to efficiently model both the atomic and electronic structures of these materials.


Aula A, dipartimento di Fisica

Link Zoom: (password: twist)


The Colloquium Series in Theoretical and Computational Physics targets the whole physicists community, physics students at all levels are particularly welcomed to attend.
The colloquium will last 45 minutes, followed by 15 minutes of discussion.

Antimo Marrazzo
Ultimo aggiornamento: 04-06-2022 - 15:56