2011/09/30 by Tsuyoshi Okubo, Sungki Chung, Hikaru Kawamura · 1 citation
Physics and Astronomy · #cond-mat.stat-mech #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.108.017206
published as Phys. Rev. Lett. 108, 017206 (2012) · 5 pages, 4 figures, accepted for publication in Phys. Rev. Lett
arxiv created 2011/11/17 · arxiv updated 2015/03/19
Ordering of the frustrated classical Heisenberg model on the triangular-lattice with an incommensurate spiral spin structure is studied under magnetic fields by means of a mean-field analysis and a Monte Carlo simulation. Several types of multiple-q states including the "skyrmion-lattice" state is observed in addition to the standard single-q state. In contrast to the Dzyaloshinskii-Moriya interaction driven system, the present model allows both skyrmions and anti-skyrmions, together with a new thermodynamic phase where skyrmion and anti-skyrmion lattices form a domain state.