About Synthetic Graphene in Real Bilayers and Synthetic Bilayers of Real Graphene

April 24th, 2017 TOBIAS GRASS University of Maryland

The physics of graphene, outstanding through its relativistic electron dispersion, can also be studied in ’synthetic’ graphene, built from cold atoms in a honeycomb lattice. In the first part of my talk, I will present a flexible setting in which such synthetic graphene is coupled to a second atomic layer with non-relativistic band structure. Different effects of this proximity will be discussed, ranging from modifications in the free bandstructure to many-body effects, including the semimetal-to-superfluid phase transition and magnetized phases in the Mott insulating regime. In the second part of my talk, I will switch to a system of real graphene in the quantum Hall scenario. In this context, I will discuss the possibility of engineering a synthetic bilayer structure by coupling different Landau levels using light. This strategy not only allows to create bilayer quantum Hall phases, but may also be used for controlling quasiparticle excitations.

Seminar, April 24, 2017, 12:00. Seminar Room

Hosted by Prof. Maciej Lewenstein