Regensburg 2016 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 7: SKM Dissertation-Prize 2016

DY 7.5: Hauptvortrag

Montag, 7. März 2016, 12:10–12:35, H2

Observing Electron Dynamics in Two Dimensions — •Søren Ulstrup — Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, 94720 CA, USA - Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark

Since the discovery of the all-carbon two-dimensional (2D) material graphene more than a decade ago the library of available 2D materials has been rapidly expanding. These materials not only host interesting physics, but may also lead to technological advances due to highly promising electronic and optical properties.

Here, I will discuss how we can directly study the energy and momentum distributions of the 2D electrons that give rise to many of these important properties in a variety of systems, including graphene and single layers of the semiconducting transition metal dichalcogenides (TMDCs). By using angle-resolved photoemission spectroscopy (ARPES), as well as recent advances of this method that have added either spatial resolution or femtosecond time-resolution, we are able to gain information that allows us to tailor new interesting 2D material systems, to investigate and tune the light-matter interaction in these materials and to discover new important physical phenomena.