J. Hagemeister, N. Romming, K. von Bergmann, E. Y. Vedmedenko & R. Wiesendanger
Nature Communications 6, 8455 (2015)
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| (a) Triangular spin lattice with a hexagonal boundary shape containing a single skyrmion at kBT=0.05 J and μB=0.1 J. (b) The inset displays the DM energy as a function of the Monte Carlo step (MCS) for different magnetic field strengths at kBT=0.61 J exhibiting a two-state behaviour due to the ongoing creation and annihilation of a single skyrmion. The size of the system is such that it contains a maximum of one skyrmion at a given MCS. The histogram of the DM energy shows two peaks corresponding to the FM and Sk states. The Sk and FM states are populated with equal probability at the critical field Bc and the areas underneath the peaks of the histogram are equal. |
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