Electrically tunable Feshbach resonances in twisted bilayer semiconductors
Ido Schwartz, Yuya Shimazaki, Clemens Kuhlenkamp, Kenji Watanabe, Takashi Taniguchi, Martin Kroner, Ataç İmamoğlu
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