Anomalous phonon softening of G-band in compressed graphitic carbon nitride due to strong electrostatic repulsion
Yang, Z., Mahmood, J., Nie, S., Tian, H., Ji, T., Niu, S., Liu, C., Baek, J.-B., Sundqvist, B., Liu, B., Liu, B., Yao, M.
Applied Physics Letters, 2021