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. 2021 Mar 30;12:1969. doi: 10.1038/s41467-021-22133-z

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© The Author(s) 2021, corrected publication 2021

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Fig. 4 — B_2g Raman spectra from 126 K to 546 K. Mode 5 (inverted triangle) exhibits a large blue shift upon cooling, and is heavily damped close to the T_C (black solid line). At the highest measured temperature, all three B_2g modes are identified: mode 2 (Fig. 3), 5, and 6. Below T_C, A_g modes 3 and 4 also become allowed.