Why does the Bloch skyrmion stabilize in bulk DMI and Neel skyrmion in interfacial DMI?

[marijanbeg]

As we have shown during the introduction talk, magnetisation rotates in the plane which is perpendicular to vector D. The plane of rotation is basically the only difference between Bloch and Neel skyrmions.

Different materials have different type of DMI. Therefore bulk DMI materials host Bloch skyrmions and interfacial DMI materials host Neel-type skyrmions. This is just a result of the different atomic interactions. The equations are different, and if you work it out analytically for a simple case or computationally (with Ubermag or other packages), you find the different configurations minimise the energy for the different interactions.

[marijanbeg]

Answered by @fangohr and @rpep.