Generation of Bloch Points with Controlled Spin Texture Using Geometrical Boundary Conditions
The study demonstrates deterministic control over Bloch point nucleation by engineering a chirality interface between two 3D double-helix nanowires of opposite handedness. This geometrical setup imposes competing topological constraints, allowing precise control over the Bloch point's polarity, circulation, and helicity angle. This method enables predictable engineering of spin textures for potential spintronic applications.