Fig. 4. Skyrmion deformation.

Isolated skyrmion morphology at E = +0 kV/cm (a), −4 kV/cm (b), −0 kV/cm (c), +4 kV/cm (d), +0 kV/cm (e), and −4 kV/cm (f) with B_bias = 55 mT. g, h Skyrmion line-cut profiles along the major and minor axes in a and b with Gaussian fittings (solid lines), respectively. The insets in a–f show the simulation results of strain-mediated deformation of one single skyrmion with ${\epsilon }_{\left[-110\right]}\mathrm{=}{\epsilon }_{\left[110\right]}\mathrm{=}0$ D  = 0.772 mJ/m² for +0 kV/cm (a), ${\epsilon }_{\left[-110\right]}=-0.169\%$, ${\epsilon }_{\left[110\right]}=0$, D  = 0.585 mJ/m² for −4 kV/cm (b), ${\epsilon }_{\left[-110\right]}={\epsilon }_{\left[110\right]}=-0.023\%$ D = 0.685 mJ/m² for −0 kV/cm (c), and ${\epsilon }_{\left[-110\right]}={\epsilon }_{\left[110\right]}=-0.012\%$ D = 0.727 mJ/m² for +4 kV/cm (d). The scale bar is 100 nm.