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QERaman: An open-source program for calculating resonance Raman spectra based on Quantum ESPRESSO

11 Aug 2023arXiv:2308.05900links table onlyarchive 2025-07-28

Nguyen T. Hung, Jianqi Huang, Yuki Tatsumi, Teng Yang, Riichiro Saito

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We present an open-source program QERaman that computes first-order resonance Raman spectroscopy of materials using the output data from Quantum ESPRESSO. Complex values of Raman tensors are calculated based on the quantum description of the Raman scattering from calculations of electron-photon and electron-phonon matrix elements, which are obtained by using the modified Quantum ESPRESSO. Our program also calculates the resonant Raman spectra as a function of incident laser energy for linearly- or circularly-polarized light. Hands-on tutorials for graphene and MoS₂ are given to show how to run QERaman. All codes, examples, and scripts are available on the GitHub repository.

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