Phase Transition in Three-Dimensional Noncollinear Magnetic Systems with Additional Two-Fold Degeneracy

Using Monte Carlo simulations, we investigate the critical behavior in a three-dimensional frustrated helimagnet with an additional two-fold degeneracy, realized in a stacked- J 1 - J 2 - J 3 model on a cubic lattice. For the case of Heisenberg spins ( N = 3), a first-order transition is found. Usin...

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Bibliographic Details
Published in:JETP letters 2020, Vol.111 (1), p.41-45
Main Author: Sorokin, A. O.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Computer simulation
Condensed Matter
Cubic lattice
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Phase transitions
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
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Summary:Using Monte Carlo simulations, we investigate the critical behavior in a three-dimensional frustrated helimagnet with an additional two-fold degeneracy, realized in a stacked- J 1 - J 2 - J 3 model on a cubic lattice. For the case of Heisenberg spins ( N = 3), a first-order transition is found. Using the renormalization group approach, the same result is also found for an arbitrary value N of component number of the classical spin. The corresponding Ginzburg-Landau functional is obtained from the lattice model and analyzed in lower orders of the 4 - ε expansion. We argue that the qualitative result don’t change if the higher orders of the expansion are taken into account.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364020010130