Phonon-enhanced nonlinearities in hexagonal boron nitride
Jared S. Ginsberg, M. Mehdi Jadidi, Jin Zhang, Cecilia Y. Chen, Nicolas Tancogne-Dejean, Sang Hoon Chae, Gauri N. Patwardhan, Lede Xian, Kenji Watanabe, Takashi Taniguchi, James Hone, Angel Rubio, Alexander L. Gaeta.