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Snapshots of cooperative atomic motions in the optical suppression of charge density waves

Author

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  • Maximilian Eichberger

    (University of Konstanz, D-78457 Konstanz, Germany)

  • Hanjo Schäfer

    (University of Konstanz, D-78457 Konstanz, Germany)

  • Marina Krumova

    (University of Konstanz, D-78457 Konstanz, Germany)

  • Markus Beyer

    (University of Konstanz, D-78457 Konstanz, Germany)

  • Jure Demsar

    (University of Konstanz, D-78457 Konstanz, Germany
    Jozef Stefan Institute, SI-1000 Ljubljana, Slovenia)

  • Helmuth Berger

    (EPFL CH-1015 Lausanne, Switzerland)

  • Gustavo Moriena

    (University of Toronto, Toronto, Ontario M5S 3H6, Canada
    University of Hamburg, Centre for Free Electron Laser Science, DESY, D-22607 Hamburg, Germany)

  • Germán Sciaini

    (University of Toronto, Toronto, Ontario M5S 3H6, Canada
    University of Hamburg, Centre for Free Electron Laser Science, DESY, D-22607 Hamburg, Germany)

  • R. J. Dwayne Miller

    (University of Toronto, Toronto, Ontario M5S 3H6, Canada
    University of Hamburg, Centre for Free Electron Laser Science, DESY, D-22607 Hamburg, Germany)

Abstract

Atomic motion observed The development of tabletop femtosecond electron diffraction sources has provided an alternative way of observing atomic motions in crystalline materials. This technique has now been applied to the charge-density-wave material 1T-TaS2, in which modulation of the electron density is accompanied by a periodic lattice distortion. Previous time-resolved studies have revealed the dynamics of the electronic charge density wave, but until now the dynamics of the lattice system has been only indirectly inferred. In this new experiment, atomic motions were observed in response to a 140 femtosecond optical pulse. Periodic lattice distortion was seen to collapse on an exceptionally fast timescale (about 250 fs), indicative of an electronically driven process involving a high degree of cooperativity. The surprisingly high degree of cooperation in the observed structural dynamics between the electronic and lattice system illustrates the potential for the technique in studies of strongly correlated systems.

Suggested Citation

  • Maximilian Eichberger & Hanjo Schäfer & Marina Krumova & Markus Beyer & Jure Demsar & Helmuth Berger & Gustavo Moriena & Germán Sciaini & R. J. Dwayne Miller, 2010. "Snapshots of cooperative atomic motions in the optical suppression of charge density waves," Nature, Nature, vol. 468(7325), pages 799-802, December.
    • Handle: RePEc:nat:nature:v:468:y:2010:i:7325:d:10.1038_nature09539
    DOI: 10.1038/nature09539
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    Cited by:

    1. Bing Cheng & Di Cheng & Tao Jiang & Wei Xia & Boqun Song & Martin Mootz & Liang Luo & Ilias E. Perakis & Yongxin Yao & Yanfeng Guo & Jigang Wang, 2024. "Chirality manipulation of ultrafast phase switches in a correlated CDW-Weyl semimetal," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Chenhang Xu & Cheng Jin & Zijing Chen & Qi Lu & Yun Cheng & Bo Zhang & Fengfeng Qi & Jiajun Chen & Xunqing Yin & Guohua Wang & Dao Xiang & Dong Qian, 2023. "Transient dynamics of the phase transition in VO2 revealed by mega-electron-volt ultrafast electron diffraction," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Masanori Sakamoto & Masaki Hada & Wataru Ota & Fumihiko Uesugi & Tohru Sato, 2023. "Localised surface plasmon resonance inducing cooperative Jahn–Teller effect for crystal phase-change in a nanocrystal," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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