Quantum interference directed chiral raman scattering in two-dimensional enantiomers

Shishu Zhang, Jianqi Huang, Yue Yu, Shanshan Wang, Teng Yang (), Zhidong Zhang, Lianming Tong () and Jin Zhang
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Shishu Zhang: Peking University
Jianqi Huang: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
Yue Yu: Peking University
Shanshan Wang: Peking University
Teng Yang: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
Zhidong Zhang: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
Lianming Tong: Peking University
Jin Zhang: Peking University

Nature Communications, 2022, vol. 13, issue 1, 1-7

Abstract: Abstract Raman scattering spectroscopy has been a necessary and accurate tool not only for characterizing lattice structure, but also for probing electron-photon and electron-phonon interactions. In the quantum picture, electrons at ground states can be excited to intermediate energy levels by photons at different k-points in the Brillouin zone, then couple to phonons and emit photons with changed energies. The elementary Raman processes via all possible pathways can interfere with each other, giving rise to intriguing scattering effects. Here we report that quantum interference can lead to significant chiral Raman response in monolayer transitional metal dichalcogenide with triclinic symmetry. Large circular intensity difference observed for monolayer rhenium dichalcogenide originates from inter-k interference of Raman scattering excited by circularly polarized light with opposite helicities. Our results reveal chiral Raman spectra as a new manifestation of quantum interference in Raman scattering process, and may inspire induction of chiral optical response in other materials.

Date: 2022
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DOI: 10.1038/s41467-022-28877-6

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