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Title: Quasi-two-dimensional metallic hydrogen in diphosphide at a high pressure

Abstract

The structural, electronic, phonon, and other characteristics of the normal phases of phosphorus hydrides with stoichiometry PH{sub k} are analyzed. The properties of the initial substance, namely, diphosphine are calculated. In contrast to phosphorus hydrides with stoichiometry PH{sub 3}, a quasi-two-dimensional phosphorus-stabilized lattice of metallic hydrogen can be formed in this substance during hydrostatic compression at a high pressure. The formed structure with H–P–H elements is shown to be locally stable in phonon spectrum, i.e., to be metastable. The properties of diphosphine are compared with the properties of similar structures of sulfur hydrides.

Authors:
;  [1]
  1. National Research Nuclear University MEPhI (Russian Federation)
Publication Date:
OSTI Identifier:
22617209
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 123; Journal Issue: 2; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; COMPRESSION; COMPUTERIZED SIMULATION; HYDROGEN; HYDROGEN SULFIDES; HYDROSTATICS; PHONONS; PHOSPHORUS COMPOUNDS; PHOSPHORUS HYDRIDES; PRESSURE RANGE GIGA PA; SPECTRA; STOICHIOMETRY; SULFUR COMPOUNDS; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Degtyarenko, N. N., and Mazur, E. A., E-mail: eugen-mazur@mail.ru. Quasi-two-dimensional metallic hydrogen in diphosphide at a high pressure. United States: N. p., 2016. Web. doi:10.1134/S1063776116070165.
Degtyarenko, N. N., & Mazur, E. A., E-mail: eugen-mazur@mail.ru. Quasi-two-dimensional metallic hydrogen in diphosphide at a high pressure. United States. doi:10.1134/S1063776116070165.
Degtyarenko, N. N., and Mazur, E. A., E-mail: eugen-mazur@mail.ru. Mon . "Quasi-two-dimensional metallic hydrogen in diphosphide at a high pressure". United States. doi:10.1134/S1063776116070165.
@article{osti_22617209,
title = {Quasi-two-dimensional metallic hydrogen in diphosphide at a high pressure},
author = {Degtyarenko, N. N. and Mazur, E. A., E-mail: eugen-mazur@mail.ru},
abstractNote = {The structural, electronic, phonon, and other characteristics of the normal phases of phosphorus hydrides with stoichiometry PH{sub k} are analyzed. The properties of the initial substance, namely, diphosphine are calculated. In contrast to phosphorus hydrides with stoichiometry PH{sub 3}, a quasi-two-dimensional phosphorus-stabilized lattice of metallic hydrogen can be formed in this substance during hydrostatic compression at a high pressure. The formed structure with H–P–H elements is shown to be locally stable in phonon spectrum, i.e., to be metastable. The properties of diphosphine are compared with the properties of similar structures of sulfur hydrides.},
doi = {10.1134/S1063776116070165},
journal = {Journal of Experimental and Theoretical Physics},
number = 2,
volume = 123,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}