81 citations · 179 across the 9 of their papers we have counts for
9 papers
Enhancement of long-wave vibronic interaction and quantum diffusion in liquids
Vladimir Hizhnyakov, Aleksander Shelkan
The zero-phonon type hoping motion of defects in the solid and liquid phases, causing quantum diffusion, is considered. It was found that due to the previously discovered significa…
Fast qubits of optical frequencies on the rare-earth ions in fluoride crystals and color centers in diamond
Vladimir Hizhnyakov, Vadim Boltrushko, Aleksander Shelkan +1
Fluoride crystals doped with rare-earth ions (REI) and pair centers in diamond for fast () quantum computers (FQC) are proposed. As specific systems for REI doping,…
Phase separation and pairing fluctuations in oxide materials
A. Bill, V. Hizhnyakov, R. K. Kremer +3
We investigate the microscopic mechanism of charge instabilities and the formation of inhomogeneous states in systems with strong electron correlations. It is demonstrated that wit…
Transverse intrinsic localized modes in monatomic chain and in graphene
V. Hizhnyakov, M. Klopov, A. Shelkan
In this paper an analytical and numerical study of anharmonic vibrations of monatomic chain and graphene in transverse (perpendicular) with respect to the chain/plane direction is…
Theory and MD simulations of intrinsic localized modes and defect formation in solids
V. Hizhnyakov, M. Haas, A. Shelkan +1
MD simulations of recoil processes following the scattering of X-rays or neutrons have been performed in ionic crystals and metals. At small energies (<10 eV) the recoil can induce…
Prediction of high frequency intrinsic localized modes in Ni and Nb
M. Haas, V. Hizhnyakov, A. Shelkan +2
It is found that in some metals an intrinsic localized mode may exist with frequency above the top of the phonon spectrum. The necessary condition, requiring sufficiently high rati…
Linear local modes induced by intrinsic localized modes in a monatomic chain
V. Hizhnyakov, A. Shelkan, M. Klopov +2
A theory is developed to describe the effect of an intrinsic localized mode (ILM) on small vibrations in a monatomic chain with hard quartic anharmonicity. One prediction is the ap…
Pressure dependence of two-level systems in disordered atomic chain
A. Shelkan, V. Hizhnyakov
The dependence of two-level systems in disordered atomic chain on pressure, both positive and negative was studied numerically. The disorder was produced through the use of interat…
Self-consistent theory of intrinsic localized modes: application to monatomic chain
V. Hizhnyakov, A. Shelkan, M. Klopov
A theory of intrinsic localized modes (ILMs) in anharmonic lattices is developed, which allows one to reduce the original nonlinear problem to a linear problem of small variations…