Direct measurement of the longitudinal exciton dispersion in
h
-BN by resonant inelastic x-ray scattering
Alessandro Nicolaou, Kari Ruotsalainen, Laura Susana, Victor Porée, Luiz Galvao Tizei, Jaakko Koskelo, Takashi Taniguchi, Kenji Watanabe, Alberto Zobelli, Matteo Gatti.
