First-principle investigation on the thermodynamics of X2N2O (X = C, Si, Ge) compounds
Xiong Qing-Yun1, Shen Qi-Xia2, Li Rui-Zi1, Shen Jiang1, Tian Fu-Yang1, †,
       

Phonon dispersions and phonon DOSs for X2N2O [X = C, Si, Ge, corresponding to panels (a), (b), and (c)].