Emergence of a Skyrmion Phase in a Frustrated Heisenberg Antiferromagnet with Dzyaloshinskii-Moriya Interaction |
| M. Mohylna, M. Žukovič
Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia |
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| We study formation of a periodical structure of quasiparticle-like magnetic configurations with non-trivial topological charge, known as a magnetic skyrmion phase, on a frustrated triangular lattice antiferromagnetic Heisenberg model with the Dzyaloshinskii-Moriya interaction by means of the Monte Carlo simulations. The existence of such a phase, formed on the three interpenetrating sublattices, has been demonstrated for a sufficiently large strength of the Dzyaloshinskii-Moriya interaction. The goal of the present investigation is to establish the minimum values of both the Dzyaloshinskii-Moriya interaction strength, as well as the magnetic field intensity at which such a skyrmion phase can exist at very low temperatures (close to zero). We find that the skyrmion phase emerges above the Dzyaloshinskii-Moriya interaction parameter value of D=0.2 and persists within the field intensity 2≤sssimh<4.5. |
DOI:10.12693/APhysPolA.137.616 topics: Heisenberg antiferromagnet, geometrical frustration, skyrmion lattice |