Influence of lattice anharmonicity and structural phase transitions on the Fröhlich interaction in $\mathrm{CsPbB}{\mathrm{r}}_{3}$: A first-principles study (opens in new tab)

Author(s): Zeli Xu, Simon Thébaud, Marios Zacharias, Laurent Pedesseau, Claudine Katan, and Jacky EvenAll-inorganic lead halide perovskites $\mathrm{CsPb}{\mathrm{X}}_{3}$ (X = Cl, Br, I) exhibit rich structural dynamics, with vibrational properties and electron-lattice interactions still under active investigation due to strong lattice anharmonicity and structural phase transitions. Here we present…[Phys. Rev. B 113, 235206] Published Wed Jun 17, 2026