Ultrafast metallization in NbO2 studied by pump-probe THz spectroscopy
Ultrafast metallization in NbO2 studied by pump-probe THz spectroscopy
Rana, R.; Klopf, J. M.; Grenzer, J.; Schneider, H.; Helm, M.; Pashkin, A.
Abstract
Niobium dioxide (NbO2) is an isovalent counterpart of VO2 with considerably higher transition temperature (Tc = 1080 K). We have performed time-resolved optical pump – THz probe measurements on NbO2 epitaxial thin film at room temperature. Notably, the pump energy required for the switching into a metastable metallic state is smaller than the energy necessary for heating NbO2 up to TC providing strong evidence for the non-thermal character of the photoinduced insulator-to-metal transition.
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Vortrag (Konferenzbeitrag)
44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019), 02.-06.09.2019, Paris, France -
Beitrag zu Proceedings
44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019), 01.-06.09.2019, Parin, France
44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019), 8873838
DOI: 10.1109/IRMMW-THz.2019.8873838
Permalink: https://www.hzdr.de/publications/Publ-29674
