22 citations · 91 across the 10 of their papers we have counts for
10 papers
Strong-interaction approximation for transfer matrix method
Oles Zaburannyi
Using transfer-matrix method a correspondence between classical spin systems ( Ising model and six-vertex model) and quantum spin systems is considered. We find the t…
Regularly alternating spin-1/2 anisotropic XY chains: The ground-state and thermodynamic properties
Oleg Derzhko, Johannes Richter, Taras Krokhmalskii +1
Using the Jordan-Wigner transformation and continued fractions we calculate rigorously the thermodynamic quantities for the spin-1/2 transverse Ising chain with periodically varyin…
Quantum phase transitions in alternating transverse Ising chains: Rigorous analytical and exact numerical results
Oleg Derzhko, Johannes Richter, Taras Krokhmalskii +1
We examine the ground state properties of the s=1/2 transverse Ising chain with regularly alternating bonds and fields using exact analytical results and exact numerical data for l…
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…
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…