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Fizika Tverdogo Tela, 2021 Volume 63, Issue 8, Pages 1141–1145 (Mi ftt8075)

This article is cited in 2 papers

Lattice dynamics

Effect of a magnetic field on the phase transitions in the Heisenberg model on a triangular lattice

A. K. Murtazaev, M. K. Badiev, M. K. Ramazanov, M. A. Magomedov

Daghestan Institute of Physics after Amirkhanov, Махачкала, Россия

Abstract: The Monte Carlo method was used to study phase transitions, magnetic and thermodynamic properties of the three-dimensional antiferromagnetic Heisenberg model on a layered triangular lattice in a magnetic field. The studies were carried out in the range of variation of the magnetic field value 0 $\le h\le$ 12. The magnetic structures of the ground state are obtained in a wide range of magnetic field values. The character of phase transitions is determined on the basis of the histogram method of data analysis. It was found that in the range 0 $\le h\le$ 10, a first-order phase transition is realized. It is shown that a further increase in the magnetic field value removes the degeneracy of the ground state and smears out the phase transition.

Keywords: frustration, Monte Carlo method, Heisenberg model, phase transitions.

Received: 29.03.2021
Revised: 02.04.2021
Accepted: 03.04.2021

DOI: 10.21883/FTT.2021.08.51168.068


 English version:
Physics of the Solid State, 2021, 63:8, 1262–1266

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© Steklov Math. Inst. of RAS, 2025