2.4 Micromagnetics

Featured work

(B) Top view of the SkX with a 5−7 defect used in calculation. The SS skyrmion is marked by green arrow. 5-fold (white line) and 7-fold (black line) disclination is formed similar to experiment. (C) 2D view of magnetic structure of the splitting skyrmion (marked by white circle) with a magnetic monopole in the middle. (D−F) 3D view of magnetic structure of a SS skyrmion corresponding to images marked by d−f in (A), respectively. The color plots in (B−F) indicate the z component of the magnetization mz. Arrows in (C−F) are direction of spins. Streamline in (D−F) is a surface with mz = −0.2..

Figure 2.4: (B) Top view of the SkX with a 5−7 defect used in calculation. The SS skyrmion is marked by green arrow. 5-fold (white line) and 7-fold (black line) disclination is formed similar to experiment. (C) 2D view of magnetic structure of the splitting skyrmion (marked by white circle) with a magnetic monopole in the middle. (D−F) 3D view of magnetic structure of a SS skyrmion corresponding to images marked by d−f in (A), respectively. The color plots in (B−F) indicate the z component of the magnetization mz. Arrows in (C−F) are direction of spins. Streamline in (D−F) is a surface with mz = −0.2..

Mechanisms of Skyrmion and Skyrmion Crystal Formation from the Conical Phase
Tae-Hoon Kim, Haijun Zhao, Ben Xu, Brandt A. Jensen, Alexander H. King, Matthew J. Kramer, Cewen Nan, Liqin Ke, Lin Zhou
Nano Letters (2020)

Features and Capabilities

Micromagnetics + string method

Brief descriptions

Micromagnetics + String method

We combine micromagnetics and the string method to search for the lowest-energy transition path for forming a new skyrmion at 5−7 defect.

Others

(Kim et al. 2019)

Publications

Kim, Tae-Hoon, Licong Peng, Ying Zhang, Liqin Ke, Brandt Jensen, X.-G. Zhang, Matthew J. Kramer, and Lin Zhou. 2019. “Formation and Relaxation Dynamics of Magnetic Skyrmion.” Microscopy and Microanalysis 25 (S2): 36–37. https://doi.org/10.1017/S1431927619000916.