Condensed Matter Seminar
In this talk, I will discuss a number of basic issues associated with phonon chirality, such as the angular momentum carried by circularly polarized phonons, electronic magnetization induced by such phonons, and the creation of phonon chirality from time reversal symmetry breaking.
Semiconducting transition metal dichalcogenides (TMDs), when reduced to the two-dimensional (2D) limit, exhibit extraordinary excitonic effects that serve as a versatile platform for optoelectronic studies. Interlayer excitons, where the electron and hole are in separate layers, form dipolar composite bosons across the atomically-thin type-II heterostructures and offer a rich phase diagram for these interacting excitations. Here, we fabricate high-quality TMD heterostructure devices that allow us to have electrical control of interlayer excitons.