Quasi-two-dimensional metallic hydrogen inside di-phosphide at high pressure

2nd Conference on Plasma & Laser Research and Technologies

Degtyarenko, N.N.^1 ; Mazur, E.A.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe sh. 31, Moscow

115409, Russia^1

关键词: 2D lattice;    High hydrostatic pressure;    High pressure;    Metallic hydrogen;    Phonon spectrum;    Phosphorus atom;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/747/1/012029/pdf
DOI  :  10.1088/1742-6596/747/1/012029

来源: IOP

【 摘 要 】

The method of mathematical modelling was used for the calculation of the structural, electronic, phononic, and other characteristics of various normal phases of phosphorus hydrides with stoichiometry PHk. It was shown that the di-phosphine may form 2D lattice of the metallic hydrogen in it, stabilized by phosphorus atoms under high hydrostatic pressure. The resulting structure with the elements of H-P-H has a locally stable (or metastable) phonon spectrum. The properties of di-phosphine were compared with the properties of similar structures such as the sulphur hydrides.