Reentrant phase transitions in the Blume-Emery-Griffiths model on a simple cubic lattice: The two-particle cluster approximation OR Baran, RR Levitskii
Physical Review B 65 (17), 172407, 2002
42 2002 Thermodynamics and dielectric properties of KH2PO4, RbH2PO4, KH2AsO4, RbH2AsO4 ferroelectrics RR Levitskii, BM Lisnii, OR Baran
Condens. Matter Phys 4 (3), 523-552, 2001
26 2001 Spin-1/2 O Baran, V Ohanyan, T Verkholyak
Physical Review B 98 (6), 064415, 2018
16 2018 Thermodynamics and dielektric properties of the NH4H2PO4 type antiferroelectrics RR Levitskii, BM Lisnii, OR Baran
Condens. Matter Phys 5 (3), 553-577, 2002
15 2002 Pair Correlation Functions of the Ising Type Model with Spin 1 within Two‐Particle Cluster Approximation OR Baran, RR Levitskii
physica status solidi (b) 219 (2), 357-364, 2000
14 2000 Phase diagrams of spin-1 Ising model with bilinear and quadrupolar interactions under magnetic field. Two-particle cluster approximation RR Levitskii, OR Baran, BM Lisnii
The European Physical Journal B-Condensed Matter and Complex Systems 50, 439-443, 2006
12 2006 Phase diagrams of spin-3/2 Blume–Capel model on rectangular lattice under longitudinal magnetic field O Baran, R Levitskii
Physica B: Condensed Matter 408, 88-94, 2013
11 2013 Influence of electric field E 3 and mechanical shear stress σ 6 on KH2PO4 crystal ferroelectric phase transition BM Lisnii, RR Levitskii, OR Baran
Phase Transitions 80 (1-2), 25-30, 2007
11 2007 Phase diagrams for ferroelectric-antiferroelectric mixed system NA Korynevskii, OR Baran
Ferroelectrics 300 (1), 151-155, 2004
7 2004 ВПЛИВ МАГНЕТНОГО ПОЛЯ НА ТЕРМОДИНАМIЧНI ХАРАКТЕРИСТИКИ СПIН-1 IЗИНҐIВСЬКОЇ МОДЕЛI З БIЛIНIЙНИМИ ТА КВАДРУПОЛЬНИМИ ВЗАЄМОДIЯМИ. КЛАСТЕРНЕ НАБЛИЖЕННЯ РР Левицький, ОР Баран
JOURNAL OF PHYSICAL STUDIES 11 (3), 303-310, 2007
5 * 2007 REFERENCE APPROACH IN THEORY OF PSEUDOSPIN SYSTEMS RR Levitskii, SI Sorokov, OR Baran
Condensed Matter Physics 3 (3(23)), 515-543, 2000
5 * 2000 Spin- T Krokhmalskii, T Verkholyak, O Baran, V Ohanyan, O Derzhko
Physical Review B 102 (14), 144403, 2020
4 2020 Investigation of an Ising-type Model with an Arbitrary Value of Spin within the Two-particle Cluster Approximation. Blum-Emery-Griffiths Model SI Sorokov, RR Levitskii, OR Baran
UKRAINS'KYI FIZYCHNYI ZHURNAL 41, 490-500, 1996
4 1996 Two-Dimensional Spin-1/2 J1− J′ 1− J2 Heisenberg Model within Jordan–Wigner Transformation OR Baran, TM Verkholyak
Ukrainian journal of physics 61 (7), 597-597, 2016
3 2016 Thermodynamics of XXZ-model within two-particle cluster approximation (in Ukrainian) RR Levitskii, SI Sorokov, OR Baran, IM Pyndsyn
Journal of Physical Studies 2 (3), 391-400, 1998
3 1998 Two-particle cluster approximation for Ising type model with arbitrary value of spin. Correlation functions of Blume-Emery-Griffiths model SI Sorokov, RR Levitskii, OR Baran
Condens. Matter Phys, 57-87, 1997
3 1997 Energy Flux Effect in the One-Dimensional Spin-1/2 XX Model of Magnetoelectric. Lagrange Multiplier Method OR Baran
Ukrainian Journal of Physics 66 (10), 890-907, 2021
1 2021 Ground state of the two-dimensional spin-1/2 J1 -J2 heisenberg model within the Jordan-Wigner fermionization OR Baran, TM Verkholyak
Journal of Physical Studies 19 (4), 4701-4701, 2015
1 2015 Influence of transverse field on the spin-3/2 Blume–Capel model on rectangular lattice O Baran, R Levitskii
J. Magn. Magn. Mater. 324 (22), 3778-3783, 2012
1 2012 Influence of transverse field on the spin-3/2 Blume–Capel model on rectangular lattice O Baran, R Levitskii
Journal of Magnetism and Magnetic Materials 324 (22), 3778-3783, 2012
1 2012 
Roman LevitskiiInstitute for Condensed Matter Physics of the National Academy of Sciences of UkraineBestätigte E-Mail-Adresse bei icmp.lviv.ua
