Ultrafast disordering of vanadium dimers in photoexcited VO2

• Published in: Science (American Association for the Advancement of Science) Vol. 362; no. 6414; pp. 572 - 576
• Main Authors: Wall, Simon, Yang, Shan, Vidas Luciana, Chollet Matthieu, Glownia, James M, Kozina, Michael, Katayama Tetsuo, Henighan, Thomas, Mason, Jiang, Miller, Timothy A, Reis, David A, Boatner, Lynn A, Delaire Olivier, Trigo Mariano
• Format: Journal Article
• Language: English
• Published: Washington The American Association for the Advancement of Science 02.11.2018
• Subjects: Chemical reactions; Diffraction; Dimers; Dynamic structural analysis; Dynamics; Femtosecond pulses; Order disorder; Organic chemistry; Phase transitions; Photoexcitation; Solid phases; Unit cell; Vanadium; Vanadium dioxide; Vanadium oxides; X-ray scattering

Snapshots of a phase transitionTime-resolved x-ray scattering can be used to investigate the dynamics of materials during the switch from one structural phase to another. So far, methods provide an ensemble average and may miss crucial aspects of the detailed mechanisms at play. Wall et al. used a t...