Zobrazeno 1 - 10
of 411
pro vyhledávání: '"Strečka, J."'
Publikováno v:
Phys. Rev. B 105 (2022) 064420
It is evidenced that effective lattice-gas models of hard-core monomers and dimers afford a proper description of low-temperature features of spin-1/2 Heisenberg diamond and octahedral chains. Besides monomeric particles assigned within the localized
Externí odkaz:
http://arxiv.org/abs/2110.07958
Autor:
Verkholyak, T., Strecka, J.
Publikováno v:
SciPost Phys. 12, 056 (2022)
Spin-1/2 Heisenberg model on the Shastry-Sutherland lattice is considered within the many-body perturbation theory developed from the exactly solved spin-1/2 Ising-Heisenberg model with the Heisenberg intradimer and Ising interdimer interactions. The
Externí odkaz:
http://arxiv.org/abs/2104.05797
Publikováno v:
Condens. Matter Phys., 2020, vol. 23, No. 4, 43713
We study magnetoelastic properties of a spin-1/2 Ising-Heisenberg diamond chain, whose elementary unit cell consists of two decorating Heisenberg spins and one nodal Ising spin. It is assumed that each couple of the decorating atoms including the Hei
Externí odkaz:
http://arxiv.org/abs/2101.07044
Publikováno v:
Condens. Matter Phys., 2020, vol. 23, No. 4, 43708
The ground state and magnetization process of an exactly solved spin-$1/2$ Ising-Heisenberg orthogonal-dimer chain with two different gyromagnetic factors of the Ising and Heisenberg spins are investigated in detail. It is shown that the investigated
Externí odkaz:
http://arxiv.org/abs/2006.12553
Publikováno v:
Physica E 125 (2021) 114089
Spin-1/2 orthogonal-dimer chain composed of regularly alternating Ising and Heisenberg dimers is exactly solved in a presence of the magnetic field by the transfer-matrix method. It is shown that the ground-state phase diagram involves in total six d
Externí odkaz:
http://arxiv.org/abs/2001.08701
Publikováno v:
In Physica A: Statistical Mechanics and its Applications 15 September 2023 626
Autor:
Torrico, J., Strecka, J., Hagiwara, M., Rojas, O., de Souza, S. M., Han, Y., Honda, Z., Lyra, M. L.
A classical-quantum chain composed of regularly alternating Ising and Heisenberg spins is rigorously solved by considering two distinct local anisotropy axes of the Ising spins. The ground-state phase diagram and magnetization curves are examined dep
Externí odkaz:
http://arxiv.org/abs/1804.01551
The effect of the canting of local anisotropy axes on the ground-state phase diagram and magnetization of a ferrimagnetic chain with regularly alternating Ising and Heisenberg spins is exactly examined in an arbitrarily oriented magnetic field. It is
Externí odkaz:
http://arxiv.org/abs/1712.05622
We consider a spin-1/2 Ising-XYZ distorted diamond chain with the XYZ interaction between the interstitial Heisenberg dimers, the nearest-neighbor Ising coupling between the nodal and interstitial spins, respectively, and the second-neighbor Ising co
Externí odkaz:
http://arxiv.org/abs/1704.05640
Publikováno v:
Acta Phys. Polon. A 131 (2017) 630-632
The spin-1/2 Ising octahedron and dodecahedron with a unique antiferromagnetic interaction display an outstanding magnetization jump at zero magnetic field, which consequently leads to a giant magnetocaloric effect during the adiabatic demagnetizatio
Externí odkaz:
http://arxiv.org/abs/1611.04296