High-pressure Raman study of solid hydrogen up to 300 GPa
Huang Xiaoli, Li Fangfei, Huang Yanping, Wu Gang, Li Xin, Zhou Qiang, Liu Bingbing, Cui Tian†,
       

(a) Pressure dependence of vibron frequency at 300 K, and the error bar is shorter than the size of the symbol. The labeled pressure range of phase III with dotted curves is about 208–225 GPa refereed to the previous literatures.[14,32](b) The candidate structure C2/c of phase III with 3 × 3 × 3 supercell and (c) the candidate structure Pbcn of phase IV with 2 × 2 × 1 supercell. These two structures are viewed along x–y plane.