GRAPHENE SEMINAR: Electrons in 2D Moiré Superlattices
When two van der Waals materials of slightly different orientations or lattice constants are overlaid, a moiré pattern emerges. The moiré pattern introduces a new length scale, many times the lattice constant of the original materials, for Bragg scattering of Bloch electrons in each layer. This gives rise to moiré minibands and rich emergent phenomena. In this talk I will discuss recent experiments on angle-aligned semiconductor heterobilayers, which exhibit remarkable correlated insulating states. I will also discuss the prospect of using moiré superlattices as a Hubbard model quantum simulator.
Jie Shan is a professor of applied & engineering physics and physics at Cornell University. She received her diploma in mathematics and physics from Moscow State University, Russia and Ph.D. in physics from Columbia University.
Thursday September 16, 2021. 12:00. ONLINE
Hosted by Prof Dmitri Efetov (ICFO)
This seminar is open to all interested. Please, register to get the Zoom link to join in.
This activity is co-funded by the European Regional Development Funds (ERDF) allocated to the Programa operatiu FEDER de Catalunya 2014-2020, with the support of the Secretaria d’Universitats i Recerca of the Departament d’Empresa i Coneixement of the Generalitat de Catalunya for emerging technology clusters devoted to the valorization and transfer of research results (GraphCAT 001-P-001702).