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We demonstrate spectrally resolved transient grating (TG) spectroscopy in the extreme ultraviolet (EUV) near the M-edge of vanadium dioxide. Time-dependent and broadband EUV-TG measurements separate the index of refraction change due to the insulator to metal transition from purely acoustic effects.
Michele Ceriotti, Guillaume André Jean Fraux, Arslan Mazitov, Nataliya Lopanitsyna
Nicola Marzari, Iurii Timrov, Michele Kotiuga, Luca Binci