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. 2021 May 24;12:3048. doi: 10.1038/s41467-021-23381-9

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© The Author(s) 2021

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Fig. 2 — a Temperature evolution of unpolarized Raman spectra in Cu₃Zn. The inset is the photo of single crystals. ARPR intensity for low-energy continua (b), the Br⁻E_2g phonon (75 cm⁻¹) (c), and the O²⁻A_1g phonon (429 cm⁻¹) (d). The dash-dotted lines are the corresponding theoretical curves based on the C₃ rotation symmetry.