Optical Pump – THz Probe Response of VO2 under High Pressure

Braun, Johannes M.; Schneider, Harald; Helm, Manfred; Mirek, Rafał; Boatner, Lynn A.; Marvel, Robert E.; Haglund, Richard F.; Pashkin, Alexej

Optical Pump – THz Probe Response of VO2 under High Pressure

Braun, J. M.; Schneider, H.; Helm, M.; Mirek, R.; Boatner, L. A.; Marvel, R. E.; Haglund, R. F.; Pashkin, A.

Abstract

We present the ultrafast THz response of VO2 under high pressures. Pump-probe signals and a photoexcitation threshold are detected even in a metallic state. Our observations can be described as a pressure-driven Mott-Hubbard transition.

Keywords: vanadium dioxide; high pressure; pump-probe spectroscopy

Vortrag (Konferenzbeitrag)
XXI. International Conference on Ultrafast Phenomena, 15.-20.07.2018, Hamburg, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-28299