Controlling the electronic structure of graphene with light (B06)

• Subject Area: Experimental Condensed Matter Physics
• Term: from 2015 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 170620586

We aim at controlling the electronic structure of epitaxial monolayer and bilayer graphene with light. To achieve this, we will follow two main roads. First, we will displace the atoms by resonantly exciting IR-active vibrations of the graphene lattice. Second, we will exploit the direct coupling of the light field to the electronic structure, resulting in the formation of Flo-quet-Bloch states. Our tool of choice is time- and angle-resolved photoemission spectroscopy (tr-ARPES) combined with variable-wavelength excitation pulses. Together with projects C1-C3, which study artifical graphene with fermionic or bosonic quantum gases in optical lattices, common scientific questions will be investigated as for instance the interband dynamics of charge carriers or the realization of topological insulators.Supporting theoretical models will be developed in projects B4, B5 and C9.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 925: Light Induced Dynamics and Control of Correlated Quantum Systems
• Applicant Institution: Universität Hamburg
• Co-Applicant Institution: Max-Planck-Institut für Struktur und Dynamik der Materie (MPSD)
• Project Head: Professorin Dr. Isabella Gierz-Pehla