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Ising-XY Transition in Three-dimensional...
Sorokin, A. O....

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Ising-XY Transition in Three-dimensional Frustrated Antiferromagnets with Collinear Ordering by Sorokin, A. O. ( Author )
Lemonjar Open Access
N.A
20-11-2014
Using Monte Carlo simulations, we study the critical behavior of two models of frustrated XY antiferromagnets with a collinear spin ordering and with an additional twofold degeneracy of the ground state. We consider a classic antiferromagnet on a body-centered cubic lattice with an additional antiferromagnetic exchange interaction between next-nearest spins, and a ferromagnet with an extra antiferromagnetic intralayer exchange. In both models, a single first-order transition on the discrete and continuous order parameters is found. Observed critical pseudo-exponents are in agreement with exponents of XY magnets with a planar spin ordering like a stacked-triangular antiferromagnet and helimagnets belonging to the same symmetry class.
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Article
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36.88 KB
English
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MYR 0.01
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https://arxiv.org/abs/1411.5439
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