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Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2

Author

Listed:
  • Sergey Kovalev

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Renato M. A. Dantas

    (Max Planck Institute for the Physics of Complex Systems)

  • Semyon Germanskiy

    (University of Cologne)

  • Jan-Christoph Deinert

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Bertram Green

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Igor Ilyakov

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Nilesh Awari

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Min Chen

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Mohammed Bawatna

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Jiwei Ling

    (Fudan University
    Collaborative Innovation Center of Advanced Microstructures)

  • Faxian Xiu

    (Fudan University
    Collaborative Innovation Center of Advanced Microstructures)

  • Paul H. M. Loosdrecht

    (University of Cologne)

  • Piotr Surówka

    (Max Planck Institute for the Physics of Complex Systems)

  • Takashi Oka

    (Max Planck Institute for the Physics of Complex Systems
    Max Planck Institute for Chemical Physics of Solids)

  • Zhe Wang

    (Helmholtz-Zentrum Dresden-Rossendorf
    University of Cologne)

Abstract

Harmonic generation is a general characteristic of driven nonlinear systems, and serves as an efficient tool for investigating the fundamental principles that govern the ultrafast nonlinear dynamics. Here, we report on terahertz-field driven high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2 at room temperature. Excited by linearly-polarized multi-cycle terahertz pulses, the third-, fifth-, and seventh-order harmonic generation is very efficient and detected via time-resolved spectroscopic techniques. The observed harmonic radiation is further studied as a function of pump-pulse fluence. Their fluence dependence is found to deviate evidently from the expected power-law dependence in the perturbative regime. The observed highly non-perturbative behavior is reproduced based on our analysis of the intraband kinetics of the terahertz-field driven nonequilibrium state using the Boltzmann transport theory. Our results indicate that the driven nonlinear kinetics of the Dirac electrons plays the central role for the observed highly nonlinear response.

Suggested Citation

  • Sergey Kovalev & Renato M. A. Dantas & Semyon Germanskiy & Jan-Christoph Deinert & Bertram Green & Igor Ilyakov & Nilesh Awari & Min Chen & Mohammed Bawatna & Jiwei Ling & Faxian Xiu & Paul H. M. Loos, 2020. "Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2," Nature Communications, Nature, vol. 11(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16133-8
    DOI: 10.1038/s41467-020-16133-8
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    Cited by:

    1. Yang-Yang Lv & Jinlong Xu & Shuang Han & Chi Zhang & Yadong Han & Jian Zhou & Shu-Hua Yao & Xiao-Ping Liu & Ming-Hui Lu & Hongming Weng & Zhenda Xie & Y. B. Chen & Jianbo Hu & Yan-Feng Chen & Shining , 2021. "High-harmonic generation in Weyl semimetal β-WP2 crystals," Nature Communications, Nature, vol. 12(1), pages 1-8, December.

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