Sandra Ruiz

A groundbreaking study led by Dr. Sandra Ruiz-Gomez and Dr. Claire Donnelly from the Max Planck Institute for Chemical Physics of Solids, in collaboration with @ALBAsynchrotron, @SOLARIS_science, and the @univienna, reveals how bending ferromagnetic nanowires enables precise control over three-dimensional magnetic textures known as Bloch Point Domain Walls (BPDWs). For the first time, researchers have experimentally demonstrated that curvature introduces asymmetric energy traps that govern the motion of BPDWs—making their behavior direction-dependent. Straight segments of the wire naturally pin these domain walls, while curved regions modulate their stability and mobility. This curvature-induced symmetry breaking highlights the role of both the central magnetic singularity and its surrounding texture in pinning mechanisms. The concept of a “Bloch Point Shift Register”, a device controlled solely by wire geometry, showcases how shape alone can steer magnetic behavior at the nanoscale. This opens exciting avenues for high-density, 3D magnetic memory and logic devices, and may extend to other quantum materials like superconductors and van der Waals magnets. More info at our website. – at Skawina, Polska