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Theory of photoinduced ultrafast switching to a spin-orbital ordered hidden phase

Author

Listed:
  • Jiajun Li

    (University Erlangen-Nürnberg)

  • Hugo U. R. Strand

    (Flatiron Institute
    University of Geneva
    University of Fribourg)

  • Philipp Werner

    (University of Fribourg)

  • Martin Eckstein

    (University Erlangen-Nürnberg)

Abstract

Photo-induced hidden phases are often observed in materials with intertwined orders. Understanding the formation of these non-thermal phases is challenging and requires a resolution of the cooperative interplay between different orders on the ultra-short timescale. In this work, we demonstrate that non-equilibrium photo-excitations can induce a state with spin-orbital orders entirely different from the equilibrium state in the three-quarter-filled two-band Hubbard model. We identify a general mechanism governing the transition to the hidden state, which relies on a non-thermal partial melting of the intertwined orders mediated by photoinduced charge excitations in the presence of strong spin-orbital exchange interactions. Our study theoretically confirms the crucial role played by orbital degrees of freedom in the light-induced dynamics of strongly correlated materials and it shows that the switching to hidden states can be controlled already on the fs timescale of the electron dynamics.

Suggested Citation

  • Jiajun Li & Hugo U. R. Strand & Philipp Werner & Martin Eckstein, 2018. "Theory of photoinduced ultrafast switching to a spin-orbital ordered hidden phase," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07051-x
    DOI: 10.1038/s41467-018-07051-x
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    Cited by:

    1. Honglie Ning & Omar Mehio & Xinwei Li & Michael Buchhold & Mathias Driesse & Hengdi Zhao & Gang Cao & David Hsieh, 2023. "A coherent phonon-induced hidden quadrupolar ordered state in Ca2RuO4," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    2. Peng Chen & Charles Paillard & Hong Jian Zhao & Jorge Íñiguez & Laurent Bellaiche, 2022. "Deterministic control of ferroelectric polarization by ultrafast laser pulses," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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