171 citations · 228 across the 9 of their papers we have counts for
9 papers
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…
Electronic Structure and Properties of Novel Layered Superconductors
G. E. Grechnev, A. V. Logosha, A. A. Lyogenkaya +2
The electronic energy structures and magnetic properties of layered superconductors NiBC, FeAl and FeSe are systematically studied, by using the density funct…
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 (…
Interplay of superconductivity and magnetism in FeSeTe compounds. Pressure effects
A. S. Panfilov, V. A. Pashchenko, G. E. Grechnev +8
The influence of uniform pressures up to 5 kbar on the superconducting transition temperature was studied for the FeSeTe (, 0.85, 0.88 and 0.9) system. F…
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…
Exact ground state of the Shastry-Sutherland lattice with classical Heisenberg spins
Alexei Grechnev
An exact analytical solution of the ground state problem of the isotropic classical Heisenberg model on the Shastry-Sutherland lattice in external magnetic field is found for a…
Equation of state and Raman-active lattice phonon in phases I, II, and III of solid hydrogen and deuterium
Yu. A. Freiman, Alexei Grechnev, S. M. Tretyak +2
We present results of lattice dynamics calculations of the equation of state and the pressure dependence of the Raman-active lattice phonon for H and D$_…
Lattice distortion in hcp rare gas solids
A. Grechnev, S. M. Tretyak, Yu. A. Freiman
The lattice distortion parameter has been calculated as a function of molar volume for the hcp phases of He, Ar, Kr and Xe. Results from both semi-empirica…
Theory of quasiparticle spectra for Fe, Co, and Ni: bulk and surface
Alexei Grechnev, Igor Di Marco, M. I. Katsnelson +3
The correlated electronic structure of iron, cobalt and nickel is investigated within the dynamical mean-field theory formalism, using the newly developed full-potential LMTO-based…