Van Der Waals interactions and anharmonicity in the lattice vibrations, dielectric constants, effective charges, and infrared spectra of the organic-inorganic halide perovskite CH3NH3PbI3 (Journal of Physical Chemistry C, 2017)

(untitled) - Pérez-Osorio, M; Champagne, A; Zacharias, M; Rignanese, G; Giustino, F