Перегляд за автором "Chishko, K.A."

Сортувати за: Порядок: Результатів:

  • Heat capacity and spin susceptibility of two-dimensional t–J model 
    Antsygina, T.N.; Poltavskaya, M.I.; Poltavsky, I.I.; Chishko, K.A. (Физика низких температур, 2007)
    Thermodynamic properties of the t–J model on square and triangular lattices near half-filling are investigated theoretically within an analytical approach based on the Kondo and Yamaji’s Green function decoupling scheme. ...
  • Helium atom in an external electric field: Exact diagonalization 
    Antsygina, T.N.; Chishko, K.A. (Физика низких температур, 2014)
    An exact diagonalization method is applied to solve the quantum-mechanical problem of spinless helium atom in an external electric field of arbitrary magnitude. The basis set for two-electron problem is built from different ...
  • Low-energy excitations in helium-like dimer within an exact diagonalization approach 
    Chishko, K.A. (Физика низких температур, 2018)
    The non-relativistic quantum-mechanical problem on bound states of four interacting spinless electrons moving in the Coulomb field of two attractive point centers with Z₀ = 2 spaced at fixed distance R₀ (⁴He₂ dimer within ...
  • Microwave spectroscopy of superfluid He II 
    Chishko, K.A.; Rybalko, A.S. (Физика низких температур, 2019)
    Experimentally observed with dielectric disc resonator technique the resonant microwave absorptionamplification in superfluid He II below λ-point has been interpreted theoretically as a phenomenon in electrically active ...
  • Structural evolution of ferromagnetic ³He multilayers adsorbed on exfoliated graphite 
    Antsygina, T.N.; Chishko, K.A. (Физика низких температур, 2013)
    On the basis of our theoretical results describing two-dimensional spin-1/2 Heisenberg model in an external magnetic field we analyze and interpret known from literature experimental data on magnetization of pure ...
  • Thermodynamics of dilute ³He –⁴He solid solutions with hcp structure 
    Chishko, K.A. (Физика низких температур, 2018)
    To interpret the anomalies in heat capacity CV (T) and temperature-dependent pressure P(T) of solid hexagonal close-packed (hcp) ⁴He we exploit the model of hcp crystalline polytype with specific lattice degrees of freedom ...
  • Translational-rotational interaction in dynamics and thermodynamics of 2D atomic crystal with molecular impurity 
    Antsygina, T.N.; Poltavskaya, M.I.; Chishko, K.A. (Физика низких температур, 2003)
    The interaction between the rotational degrees of freedom of a diatomic molecular impurity and the phonon excitations of a two-dimensional atomic matrix commensurate with a substrate is investigated theoretically. It is ...