Can the crystal structure of metallic hydrogen be determined with x-ray diffraction?
A theoretical study is reported of metallic hydrogen in the molecular phase of Cmca-4 and the atomic phase of I4_1/amd at high pressure about 500 GPa. Using density functional theory (DFT) and more specifically the PBE exchange correlation functional as approximation scheme, the crystal structure of metallic hydrogen has been investigated. This to determine its metallic properties and see if the c