243 citations · 2.3k across the 105 of their papers we have counts for
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The ground state properties of the spin-1/2 transverse Ising chain with periodically varying bonds and fields
Oleg Derzhko
Using continued fractions we study the ground state properties of the spin-1/2 Ising chain in a transverse field with periodically varying interaction strengths and external fields…
Local magnetic properties of periodic nonuniform spin-1/2 XX chains
Oleg Derzhko, Johannes Richter, Oles' Zaburannyi
Using the Jordan-Wigner fermionization, Green function approach and continued fractions we examine rigorously the local magnetizations and the local static susceptibilities of the…
Spin-Peierls instability in a quantum spin chain with Dzyaloshinskii-Moriya interaction
O. Derzhko, J. Richter, O. Zaburannyi
We analysed the ground state energy of some dimerized spin-1/2 transverse XX and Heisenberg chains with Dzyaloshinskii-Moriya (DM) interaction to study the influence of the latter…
Magnetization processes in quantum spin chains with regularly alternating intersite interactions
Oleg Derzhko
We consider the dependence magnetization vs. field at zero temperature for the spin-1/2 chains in which the intersite interactions regularly vary from site to site with a period p.…
Nucleation phenomena in a nonuniform atomic fluid in the electrical field
O. V. Derzhko, V. M. Myhal
The density functional approach is used to study the gas-to-liquid and liquid-to-gas nucleation phenomena in a fluid of two-level atoms in an external electrical field. The influen…
Dynamics of spin correlations in the spin-1/2 isotropic XY chain in a transverse field
O. Derzhko, T. Krokhmalskii, J. Stolze
Dynamic xx spin pair correlation functions for the isotropic spin-1/2 XY chain are calculated numerically for long open chains in the presence of a transverse magnetic field at fin…
Incommensurate Spin-Peierls Phases in the One-Dimensional Quantum Isotropic XY Model
Oleg Derzhko, Taras Krokhmalskii
Using the numerical approach for a study of the thermodynamic properties of the nonuniform one-dimensional spin-1/2 isotropic XY model in a transverse field we examine different la…
Thermodynamic properties of the periodic nonuniform spin-1/2 isotropic XY chains in a transverse field
Oleg Derzhko, Johannes Richter, Oles' Zaburannyi
Using the Jordan-Wigner transformation and the continued-fraction method we calculate exactly the density of states and thermodynamic quantities of the periodic nonuniform spin-1/2…
Spin-Peierls instability in the spin-1/2 transverse XX chain with Dzyaloshinskii-Moriya interaction
O. Derzhko, J. Richter, O. Zaburannyi
We calculate exactly the density of magnon states of the regularly alternating spin-1/2 XX chain with Dzyaloshinskii-Moriya interaction. The obtained results permit us to examine t…
Spin-1/2 transverse XX chain with a correlated disorder: dynamics of the transverse correlations
Oleg Derzhko, Taras Krokhmalskii
We examine numerically the dynamics of zz correlations in the spin-1/2 isotropic XY chain with random intersite coupling and on-site transverse field that depends linearly on the n…