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Tony F. Heinz ist Professor für angewandte Physik und Photonenforschung an der Stanford University und stellvertretender Laborleiter für Energiewissenschaften am SLAC National Accelerator Laboratory.

Probing electrons and electron dynamics in 2D materials and heterostructures

Two-dimensional (2D) materials provide a fascinating platform to investigate electron interactions and dynamics. In addition to access to the valley/spin degree of freedom, 2D semiconductors are notable for their pronounced excitonic effects. We will describe some of the ensuing dynamics in these systems, both for isolated monolayers and for heterostructures that we create by stacking 2D layers upon one another.

In addition to more conventional optical measurements, we will report recent results of time- and angle-resolved photoemission spectroscopy (tr-ARPES). This approach allows us to image exciton structure and dynamics in directly momentum space and has provided new insights into interlayer excitons and their localization within moiré potentials.