4.7 Review

Light-induced emergent phenomena in 2D materials and topological materials

Journal

NATURE REVIEWS PHYSICS
Volume 4, Issue 1, Pages 33-48

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s42254-021-00388-1

Keywords

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Funding

  1. National Natural Science Foundation of China [11725418, 11427903, 12034001]
  2. National Key R&D Program of China [2020YFA0308800, 2016YFA0301004]
  3. Tsinghua University Initiative Scientific Research Program
  4. Tohoku-Tsinghua Collaborative Research Fund
  5. Beijing Advanced Innovation Center for Future Chip (ICFC), Beijing Nature Science Foundation [JQ19001]

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The interaction between light and 2D and topological materials serves as a fascinating control knob for inducing emergent properties and achieving new functionalities in ultrafast timescales, from femtoseconds to picoseconds. Recent experimental progress on light-induced phenomena, such as Bloch-Floquet states and photo-induced phase transitions, has been discussed, with perspectives on the opportunities of proposed light-induced phenomena and open experimental challenges also provided.
Light-matter interaction in 2D and topological materials provides a fascinating control knob for inducing emergent, non-equilibrium properties and achieving new functionalities in the ultrafast timescale. This Review discusses recent experimental progress on the light-induced phenomena and provides perspectives on the opportunities of proposed light-induced phenomena, as well as open experimental challenges. Light-matter interaction in 2D and topological materials provides a fascinating control knob for inducing emergent, non-equilibrium properties and achieving new functionalities in the ultrafast timescale (from femtosecond to picosecond). Over the past decade, intriguing light-induced phenomena, such as Bloch-Floquet states and photo-induced phase transitions, have been reported experimentally, but many still await experimental realization. In this Review, we discuss recent progress on the light-induced phenomena, in which the light field could act as a time-periodic field to drive Floquet states, induce structural and topological phase transitions in quantum materials, couple with spin and various pseudospins, and induce nonlinear optical responses that are affected by the geometric phase. Perspectives on the opportunities of proposed light-induced phenomena, as well as open experimental challenges, are also discussed.

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