Fig. 2: Displacement currents and the corresponding magnetic fields generated by a moving kink pair. | npj Computational Materials

Fig. 2: Displacement currents and the corresponding magnetic fields generated by a moving kink pair.

From: Current vortices and magnetic fields driven by moving polar twin boundaries in ferroelastic materials

Fig. 2

a The atomic configuration of the movement of kink pairs driven by external stress. The colors are coded by the atomic-level shear strain. b The relative displacements of cations and anions near the kink pairs within 0.5 ps. Ionic displacements are amplified by a factor of 50 for clarity. c One displacement current vortex is inside the vertical needle and two displacement current half-vortices outside the needle. The local displacement current is ~10−18 A. The generated magnetic moment is 1.2 × 10−3 μB. The current densities in the vector maps are amplified by a factor of 2 × 1017 for clarity. d Time evolution of positions of three kink pairs. The velocity was estimated when the kinks move steadily.

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