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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. 3 — a Mode 2 (blue) fitted with the Fano lineshape and QEP (red) with the damped harmonic oscillator lineshape. b Peak amplitude, energy, width, and absolute value of Fano asymmetry q extracted from the fitting, and the error bars represent the standard deviation in the fitting procedure. Black dashed line indicates T_C. c Mode 2 remains asymmetric well below T_C. d Mode 1 also becomes asymmetric in the low-temperature insulating phase. Black dashed lines in (c) and (d) represent the center energy of Mode 2 and Mode 1, respectively.