Electrically tunable Feshbach resonances in twisted bilayer semiconductors

Abstract

Getting more from Moire Moire superlattices of twisted two-dimensional materials have emerged as a new paradigm for exploring strongly correlated electron systems. Once fabricated, however, the electronic correlations and the subsequent behavior of any device structure tend to be fixed. Schwartz et al . show that further sandwiching of the bilayer heterostructures between graphene electrical gates can provide a route to controlling the electronic properties in each layer separately and the electronic interaction strengths overall. The fine control of the electronic interactions, in terms of a tunable Feshbach resonance, provides a platform to explore many-body physics and quantum simulation. —ISO