12 citations · 36 across the 9 of their papers we have counts for
9 papers
Negative Thermal Expansion in Solid Deuteromethane
Yu. A. Freiman, V. V. Vengerovsky, Alexander F. Goncharov
The thermal expansion at constant pressure of solid CD III is calculated for the low temperature region where only the rotational tunneling modes are essential and the effect o…
Comment on High-Pressure Behavior of Hydrogen and Deuterium at Low Temperatures
Alexander F. Goncharov, Yu. A. Freiman
X.-D. Liu et al. [Phys. Rev. Lett. 119, 065301 (2017)] report on the existence of a new unique solid phase of D2, which makes the high-pressure low-temperature behavior distinct fr…
Elastic anisotropy and Poisson's ratio of solid helium under pressure
A. Grechnev, S. M. Tretyak, Yu. A. Freiman +2
The elastic moduli, elastic anisotropy coefficients, sound velocities and Poisson's ratio of hcp solid helium have been calculated using density functional theory in generalized gr…
Poisson's ratio in cryocrystals under pressure
Yu. A. Freiman, Alexei Grechnev, S. M. Tretyak +2
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 a…
Crystal field and related phenomena in hexagonal close-packed H2 and D2 under pressure
Yu. A. Freiman, S. M. Tretyak, Alexei Grechnev +2
The lattice distortion parameter (the deviation of the c/a ratio from the ideal value 1.633), orientational order parameter, and crystal-field parameter in hexagonal close-packed (…
Sound velocities of hexagonal close-packed H2 and He under pressure
Yu. A. Freiman, Alexei Grechnev, S. M. Tretyak +3
Bulk, shear, and compressional aggregate sound velocities of hydrogen and helium in the close- packed hexagonal structure are calculated over a wide pressure range using two comple…