Poisson's ratio in cryocrystals under pressure

Yu. A. Freiman; Alexei Grechnev; S. M. Tretyak; Alexander F. Goncharov; Eugene Gregoryanz

doi:10.1063/1.4922095

Poisson's ratio in cryocrystals under pressure

Yu. A. Freiman^*, Alexei Grechnev, S. M. Tretyak, Alexander F. Goncharov, Eugene Gregoryanz

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

We present results of lattice dynamics calculations of Poisson's ratio (PR) for solid hydrogen and rare gas solids (He, Ne, Ar, Kr and Xe) under pressure. Using two complementary approaches-the semi-empirical many-body calculations and the first-principle density-functional theory calculations we found three different types of pressure dependencies of PR. While for solid helium PR monotonically decreases with rising pressure, for Ar, Kr, and Xe it monotonically increases with pressure. For solid hydrogen and Ne the pressure dependencies of PR are nonmonotonic displaying rather deep minimums. The role of the intermolecular potentials in this diversity of patterns is discussed. (C) 2015 AIP Publishing LLC.

Original language	English
Pages (from-to)	445-448
Number of pages	4
Journal	Low temperature physics
Volume	41
Issue number	6
DOIs	https://doi.org/10.1063/1.4922095
Publication status	Published - Jun 2015

Keywords / Materials (for Non-textual outputs)

ELASTICITY
HYDROGEN
SOLIDS

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title = "Poisson's ratio in cryocrystals under pressure",

abstract = "We present results of lattice dynamics calculations of Poisson's ratio (PR) for solid hydrogen and rare gas solids (He, Ne, Ar, Kr and Xe) under pressure. Using two complementary approaches-the semi-empirical many-body calculations and the first-principle density-functional theory calculations we found three different types of pressure dependencies of PR. While for solid helium PR monotonically decreases with rising pressure, for Ar, Kr, and Xe it monotonically increases with pressure. For solid hydrogen and Ne the pressure dependencies of PR are nonmonotonic displaying rather deep minimums. The role of the intermolecular potentials in this diversity of patterns is discussed. (C) 2015 AIP Publishing LLC.",

keywords = "ELASTICITY, HYDROGEN, SOLIDS",

author = "Freiman, {Yu. A.} and Alexei Grechnev and Tretyak, {S. M.} and Goncharov, {Alexander F.} and Eugene Gregoryanz",

year = "2015",

month = jun,

doi = "10.1063/1.4922095",

language = "English",

volume = "41",

pages = "445--448",

journal = "Low temperature physics",

issn = "1063-777X",

publisher = "American Institute of Physics",

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T1 - Poisson's ratio in cryocrystals under pressure

AU - Freiman, Yu. A.

AU - Grechnev, Alexei

AU - Tretyak, S. M.

AU - Goncharov, Alexander F.

AU - Gregoryanz, Eugene

PY - 2015/6

Y1 - 2015/6

N2 - We present results of lattice dynamics calculations of Poisson's ratio (PR) for solid hydrogen and rare gas solids (He, Ne, Ar, Kr and Xe) under pressure. Using two complementary approaches-the semi-empirical many-body calculations and the first-principle density-functional theory calculations we found three different types of pressure dependencies of PR. While for solid helium PR monotonically decreases with rising pressure, for Ar, Kr, and Xe it monotonically increases with pressure. For solid hydrogen and Ne the pressure dependencies of PR are nonmonotonic displaying rather deep minimums. The role of the intermolecular potentials in this diversity of patterns is discussed. (C) 2015 AIP Publishing LLC.

AB - We present results of lattice dynamics calculations of Poisson's ratio (PR) for solid hydrogen and rare gas solids (He, Ne, Ar, Kr and Xe) under pressure. Using two complementary approaches-the semi-empirical many-body calculations and the first-principle density-functional theory calculations we found three different types of pressure dependencies of PR. While for solid helium PR monotonically decreases with rising pressure, for Ar, Kr, and Xe it monotonically increases with pressure. For solid hydrogen and Ne the pressure dependencies of PR are nonmonotonic displaying rather deep minimums. The role of the intermolecular potentials in this diversity of patterns is discussed. (C) 2015 AIP Publishing LLC.

KW - ELASTICITY

KW - HYDROGEN

KW - SOLIDS

U2 - 10.1063/1.4922095

DO - 10.1063/1.4922095

M3 - Article

SN - 1063-777X

VL - 41

SP - 445

EP - 448

JO - Low temperature physics

JF - Low temperature physics

IS - 6

ER -

Poisson's ratio in cryocrystals under pressure

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Keywords / Materials (for Non-textual outputs)

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