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Effects of Film-Substrate Interaction on Ultrafast Dynamics in the Photo-Induced Phase Transition in Vanadium Dioxide

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Abstract

Ultrafast pump-probe spectroscopy shows that the photo-induced monoclinic-to-rutile phase transformation in vanadium dioxide thin films occurs in 40±0.5 ps independent of nanograin morphology, because substrate-induced strain leads to common families of grain orientations.

© 2016 Optical Society of America

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