Fig. 4: Micromagnetic and LTEM image simulations of DW bimerons in a cubic chiral magnet (110) thin film with t = 50 nm. | Nature Communications

Fig. 4: Micromagnetic and LTEM image simulations of DW bimerons in a cubic chiral magnet (110) thin film with t = 50 nm.

From: Observation of domain wall bimerons in chiral magnets

Fig. 4

a Simulated results of magnetization distributions for various cubic magnetocrystalline anisotropy (Kc) and magnetic fields (B). Parameters are as follows: saturation magnetization Msat = 180 kA/m, exchange stiffness constant A = 3.83 pJ/m and DMI constant D = 0.332 mJ/m2. K0 = D2/4 A and Bd = D2/2MsatA are normalization constants. The magnetic easy axes are the <100> directions (Kc > 0). The size of each image is 1.6 × 1.6 μm2. The color wheel (upper right panel) represents the orientation and magnitude of perpendicularly averaged in-plane components of truncated in-plane conical magnetization to the plane. The white and black indicate +z and −z directions, respectively. b Enlarged view of magnetic structure corresponding to magenta dotted box in a. c Calculated TCD map for b. d, e Simulated underfocused (Δf = −1.5 mm) (d) and overfocused (Δf = +1.5 mm) (e) LTEM images for b. Further details are shown in Supplementary Fig. 4.

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