News & Events

Quantum Materials and Devices Seminars

Twistronic Heterostructures

Stephen Carr, Senior Graduate Student, Harvard University

Oct 9, 2019

Controlling the relative twist angle between successive layers in two-dimensional materials offers an approach to manipulating their electronic properties: “twistronics.” For arbitrary twisting angles, the resulting moiré patterns contain thousands of atoms and generally lack symmetry, making them challenging to understand. Under careful tuning of the twist, the emerging structures show many exciting phenomenon: quasicrystals, domain-wall formation, and superconductivity. Accurate multiscale models for the atomic positions and electronic structure in twistronic devices will be presented, along with an exploration of how we can leverage the van der Waals interface to engineer desired electronic properties.


Evie Santana-Nola