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作者:M. Žukovič , M. Borovský , A. Bobák
来源:[J].Physics Letters A(IF 1.766), 2018, Vol.382 (19), pp.1305-1311
摘要:Abstract(#br)We study a stacked triangular lattice Ising model with both intra- and inter-plane antiferromagnetic interactions in a field, by Monte Carlo simulation. We find only one phase transition from a paramagnetic to a partially disordered phase, which is of second order an...
作者:M. Žukovič , M. Semjan
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2018, Vol.451, pp.311-318
摘要:Abstract(#br)Magnetic and magnetocaloric properties of geometrically frustrated antiferromagnetic Ising (IA) and ferromagnetic spin ice (SI) models on a nanocluster with a ‘Star of David’ topology, including next-nearest-neighbor (NNN) interactions, are studied by an exact e...
作者:M. Jurčišin , M. Žukovič
来源:[J].Physica A: Statistical Mechanics and its Applications(IF 1.676), 2018
摘要:Abstract(#br)We investigate phase transitions and critical behaviors in the frustrated J 1 − J 2 − J 3 transverse Ising antiferromagnet on a honeycomb lattice using an effective-field theory. We find that at large negative J 3 ∕ | J 1 | ( < − 1 ∕ 3 ) there is a tri...
作者:M. Mohylna , M. Žukovič
来源:[J].Physics Letters A(IF 1.766), 2019
摘要:Abstract(#br)Magnetization, entropy and magnetocaloric properties of various geometrically frustrated tetrahedra-based Ising antiferromagnetic nanoclusters with corner-, edge-, and face-sharing topologies are studied by exact enumeration. It is found that the studied properties s...
作者:M. Žukovič
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2015, Vol.374, pp.22-35
摘要:Abstract(#br)Thermodynamic and magnetocaloric properties of geometrically frustrated Ising spin clusters of selected shapes and sizes are studied by exact enumeration. In the ground state the magnetization and the entropy show step-wise variations with an applied magnetic field. ...
作者:M. Žukovič , A. Bobák
来源:[J].Physica A: Statistical Mechanics and its Applications(IF 1.676), 2015, Vol.436, pp.509-518
摘要:Abstract(#br)By Monte Carlo simulations we study critical properties of the mixed spin-1/2 and spin-1 Ising model on a triangular lattice, considering two different ways of the spin-value distributions on the three sublattices: ( 1 / 2 , 1 / 2 , 1 ) and ( 1 / 2 , 1 , 1 ) . I...
作者:M. Žukovič , A. Bobák
来源:[J].Physics Letters A(IF 1.766), 2016, Vol.380 (9-10), pp.1087-1092
摘要:Abstract(#br)We study a bilayer Ising spin system consisting of antiferromagnetic (AF) and ferromagnetic (FM) triangular planes, coupled by ferromagnetic exchange interaction, by standard Monte Carlo and parallel tempering methods. The AF/FM bilayer is found to display the critic...
作者:M. Žukovič , M. Borovský
来源:[J].Physics Letters A(IF 1.766), 2016, Vol.380 (34), pp.2693-2697
摘要:Abstract(#br)We use the effective-field theory with correlations based on different cluster sizes to investigate phase diagrams of the frustrated Ising antiferromagnet on the honeycomb lattice with isotropic interactions of the strength J 1 < 0 between nearest-neighbour pairs and...
作者:M. Žukovič , A. Bobák
来源:[J].Physics Letters A(IF 1.766), 2014, Vol.378 (26-27), pp.1773-1779
摘要:Abstract(#br)Geometrically frustrated clusters of Ising spins of different shapes on a triangular lattice are studied by exact enumeration. The focus is laid on the ground-state energy and residual entropy behaviors as functions of the cluster shape and size, as well as the spin ...
作者:M. Žukovič , M. Borovský , A. Bobák
来源:[J].Physics Letters A(IF 1.766), 2010, Vol.374 (41), pp.4260-4264
摘要:Abstract(#br)Magnetization processes and phase transitions in a geometrically frustrated triangular lattice Ising antiferromagnet in the presence of an external magnetic field and a random site dilution are studied by the use of an effective-field theory with correlations. We fin...

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