Three-sublattice skyrmion crystal in the antiferromagnetic triangular lattice

Three-sublattice order in the SU(3) Heisenberg model on the square and triangular lattice

Bela Bauer,1, 2 Philippe Corboz,1, 3 Andreas M. Läuchli,4, 5 Laura Messio,3 Karlo Penc,6 Matthias Troyer,1 and Frédéric Mila3 Theoretische Physik, ETH Zurich, 8093 Zurich, Switzerland Station Q, Microsoft Research, Santa Barbara, CA 93106 Institute of Theoretical Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland Institut für Theoretische Physik, Universität...

Two-Step Antiferromagnetic Transitions and Ferroelectricity in Spin-1 Triangular-Lattice Antiferromagnetic Sr3NiTa2O9.

We report the low-temperature characterizations on structural, specific heat, magnetic, and ferroelectric behaviors of transition metal oxide compound Sr3NiTa2O9. It is suggested that Sr3NiTa2O9 is a spin-1 triangular lattice Heisenberg quantum antiferromagnet which may have weak easy-axis anisotropy. At zero magnetic field, a two-step transition sequence at T(N1) = 3.35 K and T(N2) = 2.74 K, r...

Antiferromagnetic Skyrmion: Stability, Creation and Manipulation

Magnetic skyrmions are particle-like topological excitations in ferromagnets, which have the topo-logical number Q = ± 1, and hence show the skyrmion Hall effect (SkHE) due to the Magnus force effect originating from the topology. Here, we propose the counterpart of the magnetic skyrmion in the antiferromagnetic (AFM) system, that is, the AFM skyrmion, which is topologically protected but witho...

Order by disorder in the antiferromagnetic Ising model on an elastic triangular lattice.

Geometrically frustrated materials have a ground-state degeneracy that may be lifted by subtle effects, such as higher-order interactions causing small energetic preferences for ordered structures. Alternatively, ordering may result from entropic differences between configurations in an effect termed order by disorder. Motivated by recent experiments in a frustrated colloidal system in which or...

Antiferromagnetic Heisenberg model on an anisotropic triangular lattice in the presence of a magnetic field