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

doi:10.1051/epjconf/201920504003

EPJ Web of Conferences (Jan 2019)

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

Affiliations

Braun Johannes M.
Schneider Harald: Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf
Helm Manfred
Mirek Rafał: Faculty of Physics, University of Warsaw
Boatner Lynn A.: Materials Science and Technology Division, Oak Ridge National Laboratory
Marvel Robert E.: Department of Physics and Astronomy, Vanderbilt University
Haglund Richard F.: Department of Physics and Astronomy, Vanderbilt University
Pashkin Alexej: Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf

DOI: https://doi.org/10.1051/epjconf/201920504003
Journal volume & issue: Vol. 205
p. 04003

Abstract

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We present the ultrafast THz response of VO2 under high pressures. A clear anomaly is observed around 8 GPa indicating a pressure-induced phase transition. Our observations can be interpreted in terms of a bandwidth-controlled Mott-Hubbard transition.

Published in EPJ Web of Conferences

ISSN: 2100-014X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Science: Physics
Website: http://www.epj-conferences.org/

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