Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Tadeusz Balcerzak"'
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 518:13-21
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 ) ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f500a8da114f35d3da726521848fe08
https://doi.org/10.1016/j.physa.2018.11.058
https://doi.org/10.1016/j.physa.2018.11.058
Publikováno v:
Journal of Physics: Condensed Matter. 34:485802
A generalized spin-1/2 transverse field Ising model with a negative thermal expansion of the lattice is introduced and investigated using standard methods of statistical mechanics. Besides the volume-dependent magnetic energy, the static lattice ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27572eae035a341b1c378d0500e1be21
https://doi.org/10.1088/1361-648x/ac976e
https://doi.org/10.1088/1361-648x/ac976e
Autor:
Tadeusz Balcerzak
Publikováno v:
Journal of Magnetism and Magnetic Materials. 556:169419
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9e4d8fa580f765e82a0ad1570a50429
https://doi.org/10.1016/j.jmmm.2022.169419
https://doi.org/10.1016/j.jmmm.2022.169419
Autor:
Tadeusz Balcerzak
Publikováno v:
Journal of Magnetism and Magnetic Materials. 549:168968
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::082c2df553c58cb326b8bc70fc085dd6
https://doi.org/10.1016/j.jmmm.2021.168968
https://doi.org/10.1016/j.jmmm.2021.168968
The Ising one-dimensional (1D) chain with spin S = 1 / 2 and magnetoelastic interaction is studied with the lattice contribution included in the form of elastic interaction and thermal vibrations simultaneously taken into account. The magnetic energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bb93c8ee22ac51a3d3e4df3c108821c
http://arxiv.org/abs/2003.12054
http://arxiv.org/abs/2003.12054
Autor:
Tadeusz Balcerzak, Karol Szałowski
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 468:252-266
The chemical potential of the two-site Hubbard cluster (pair) embedded in the external electric and magnetic fields is studied by exact diagonalization of the Hamiltonian. The formalism of the grand canonical ensemble is adopted. The influence of tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39d2776a66eeff22b3d0cdb3875ed709
https://doi.org/10.1016/j.physa.2016.11.004
https://doi.org/10.1016/j.physa.2016.11.004
We study the nature of a low-temperature phase in the frustrated honeycomb-lattice Ising model with first- and second-neighbor antiferromagnetic (AF) interactions, $J_1$ and $J_2$, respectively, for $R = J_2/J_1 > 1/4$. It is known that for $R < 1/4$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9337f3108a608ad18a6ea04f96de849a
http://arxiv.org/abs/1905.11487
http://arxiv.org/abs/1905.11487
Autor:
Tadeusz Balcerzak, Karol Szałowski
The pair cluster (dimer) is studied within the framework of the extended Hubbard model and the grand canonical ensemble. The elastic interatomic interactions and thermal vibrational energy of the atoms are taken into account. The total grand potentia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::192a6b5859c8c0af21cfef52fb565dcd
http://arxiv.org/abs/1905.04379
http://arxiv.org/abs/1905.04379
Autor:
Tadeusz Balcerzak, Karol Szałowski
Publikováno v:
Journal of Magnetism and Magnetic Materials. 513:167157
The Pair Approximation method has been formulated for the isotropic ferromagnetic Heisenberg model with spin S = 1 . The exchange interactions of arbitrary range have been taken into account. The single-ion anisotropy has been considered as well as t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::247356ba8c8f8a549ec0471423812d23
https://doi.org/10.1016/j.jmmm.2020.167157
https://doi.org/10.1016/j.jmmm.2020.167157
Publikováno v:
Journal of Physics: Condensed Matter. 32:335801
A generalized spin-1 Blume-Capel model with distance/volume dependent nearest-neighbor exchange interaction is introduced and investigated using the standard methods of statistical mechanics. Besides of the volume-dependent magnetic energy, the stati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e72ac223b444f1eacfc2aba760852385
https://doi.org/10.1088/1361-648x/ab85f5
https://doi.org/10.1088/1361-648x/ab85f5