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Ultrafast disordering of vanadium dimers in photoexcited VO 2

Publication ,  Journal Article
Wall, S; Yang, S; Vidas, L; Chollet, M; Glownia, JM; Kozina, M; Katayama, T; Henighan, T; Jiang, M; Miller, TA; Reis, DA; Boatner, LA ...
Published in: Science
November 2, 2018

Time-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 used a total-scattering technique to probe the dynamics of the ultrafast insulator-to-metal transition of vanadium dioxide (VO ) (see the Perspective by Cavalleri). Femtosecond x-ray pulses provide access to the time- and momentum-resolved dynamics of the structural transition. Their results show that the photoinduced transition is of the order-disorder type, driven by an ultrafast change in the lattice potential that suddenly unlocks the vanadium atoms and yields large-amplitude uncorrelated motions, rather than occurring through a coherent displacive mechanism. , this issue p. ; see also p.

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Published In

Science

DOI

EISSN

1095-9203

ISSN

0036-8075

Publication Date

November 2, 2018

Volume

362

Issue

6414

Start / End Page

572 / 576

Publisher

American Association for the Advancement of Science (AAAS)

Related Subject Headings

  • General Science & Technology
 

Citation

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Chicago
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Wall, S., Yang, S., Vidas, L., Chollet, M., Glownia, J. M., Kozina, M., … Trigo, M. (2018). Ultrafast disordering of vanadium dimers in photoexcited VO 2. Science, 362(6414), 572–576. https://doi.org/10.1126/science.aau3873
Wall, Simon, Shan Yang, Luciana Vidas, Matthieu Chollet, James M. Glownia, Michael Kozina, Tetsuo Katayama, et al. “Ultrafast disordering of vanadium dimers in photoexcited VO 2.” Science 362, no. 6414 (November 2, 2018): 572–76. https://doi.org/10.1126/science.aau3873.
Wall S, Yang S, Vidas L, Chollet M, Glownia JM, Kozina M, et al. Ultrafast disordering of vanadium dimers in photoexcited VO 2. Science. 2018 Nov 2;362(6414):572–6.
Wall, Simon, et al. “Ultrafast disordering of vanadium dimers in photoexcited VO 2.” Science, vol. 362, no. 6414, American Association for the Advancement of Science (AAAS), Nov. 2018, pp. 572–76. Crossref, doi:10.1126/science.aau3873.
Wall S, Yang S, Vidas L, Chollet M, Glownia JM, Kozina M, Katayama T, Henighan T, Jiang M, Miller TA, Reis DA, Boatner LA, Delaire O, Trigo M. Ultrafast disordering of vanadium dimers in photoexcited VO 2. Science. American Association for the Advancement of Science (AAAS); 2018 Nov 2;362(6414):572–576.
Journal cover image

Published In

Science

DOI

EISSN

1095-9203

ISSN

0036-8075

Publication Date

November 2, 2018

Volume

362

Issue

6414

Start / End Page

572 / 576

Publisher

American Association for the Advancement of Science (AAAS)

Related Subject Headings

  • General Science & Technology