Speaker
Description
Understanding mechanisms of energy dissipation is nowadays successfully examined down to the atomic level by means of Atomic Force Microscope (AFM). Graphene bilayers with twist angles are known to host the series of interaction-driven correlated insulating phases with promising applications for nano-electronics, etc. The electron interactions might even lead to the emergence of magnetism, recently reported in monolayer MoS$_2$. We report on AFM force and energy dissipation on quantum devices: twisted bilayer graphene (TBG) and monolayer MoS$_2$. Ultrasensitive tips acting as a gate over the TBG shows dissipation peaks attributed to fractional filling of the flat energy bands. In gated monolayer MoS$_2$ a phase transition is detected with magnetic tip.
