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Light-induced dimension crossover dictated by excitonic correlations

Author

Listed:
  • Yun Cheng

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Alfred Zong

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory)

  • Jun Li

    (Institute of Physics, Chinese Academy of Sciences)

  • Wei Xia

    (ShanghaiTech University
    ShanghaiTech Laboratory for Topological Physics)

  • Shaofeng Duan

    (School of Physics and Astronomy, Shanghai Jiao Tong University)

  • Wenxuan Zhao

    (Tsinghua University)

  • Yidian Li

    (Tsinghua University)

  • Fengfeng Qi

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Jun Wu

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Lingrong Zhao

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Pengfei Zhu

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Xiao Zou

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Tao Jiang

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Yanfeng Guo

    (ShanghaiTech University)

  • Lexian Yang

    (Tsinghua University)

  • Dong Qian

    (School of Physics and Astronomy, Shanghai Jiao Tong University)

  • Wentao Zhang

    (School of Physics and Astronomy, Shanghai Jiao Tong University)

  • Anshul Kogar

    (University of California at Los Angeles)

  • Michael W. Zuerch

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory)

  • Dao Xiang

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University
    Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Jie Zhang

    (School of Physics and Astronomy, Shanghai Jiao Tong University
    Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

Abstract

In low-dimensional systems with strong electronic correlations, the application of an ultrashort laser pulse often yields novel phases that are otherwise inaccessible. The central challenge in understanding such phenomena is to determine how dimensionality and many-body correlations together govern the pathway of a non-adiabatic transition. To this end, we examine a layered compound, 1T-TiSe2, whose three-dimensional charge-density-wave (3D CDW) state also features exciton condensation due to strong electron-hole interactions. We find that photoexcitation suppresses the equilibrium 3D CDW while creating a nonequilibrium 2D CDW. Remarkably, the dimension reduction does not occur unless bound electron-hole pairs are broken. This relation suggests that excitonic correlations maintain the out-of-plane CDW coherence, settling a long-standing debate over their role in the CDW transition. Our findings demonstrate how optical manipulation of electronic interaction enables one to control the dimensionality of a broken-symmetry order, paving the way for realizing other emergent states in strongly correlated systems.

Suggested Citation

  • Yun Cheng & Alfred Zong & Jun Li & Wei Xia & Shaofeng Duan & Wenxuan Zhao & Yidian Li & Fengfeng Qi & Jun Wu & Lingrong Zhao & Pengfei Zhu & Xiao Zou & Tao Jiang & Yanfeng Guo & Lexian Yang & Dong Qia, 2022. "Light-induced dimension crossover dictated by excitonic correlations," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28309-5
    DOI: 10.1038/s41467-022-28309-5
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    References listed on IDEAS

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    1. Quirin Stahl & Maximilian Kusch & Florian Heinsch & Gaston Garbarino & Norman Kretzschmar & Kerstin Hanff & Kai Rossnagel & Jochen Geck & Tobias Ritschel, 2020. "Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    2. Shaofeng Duan & Yun Cheng & Wei Xia & Yuanyuan Yang & Chengyang Xu & Fengfeng Qi & Chaozhi Huang & Tianwei Tang & Yanfeng Guo & Weidong Luo & Dong Qian & Dao Xiang & Jie Zhang & Wentao Zhang, 2021. "Optical manipulation of electronic dimensionality in a quantum material," Nature, Nature, vol. 595(7866), pages 239-244, July.
    3. P Chen & Y. -H. Chan & X. -Y. Fang & Y Zhang & M Y Chou & S. -K. Mo & Z Hussain & A. -V. Fedorov & T. -C. Chiang, 2015. "Charge density wave transition in single-layer titanium diselenide," Nature Communications, Nature, vol. 6(1), pages 1-5, December.
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    Cited by:

    1. 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.
    2. Nguyen Nhat Quyen & Wen-Yen Tzeng & Chih-En Hsu & I-An Lin & Wan-Hsin Chen & Hao-Hsiang Jia & Sheng-Chiao Wang & Cheng-En Liu & Yu-Sheng Chen & Wei-Liang Chen & Ta-Lei Chou & I-Ta Wang & Chia-Nung Kuo, 2024. "Three-dimensional ultrafast charge-density-wave dynamics in CuTe," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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