3 papers
cond-mat.mes-hall2025
Regularized Micromagnetic Theory for Bloch Points
Vladyslav M. Kuchkin, Andreas Haller, Andreas Michels +2
Magnetic singularities known as Bloch points (BPs) present a fundamental challenge for micromagnetic theory, which is based on the assumption of a fixed magnetization vector length…
cond-mat.mes-hall2025
Quantum geometry in the dynamics of band-projected operators
Chen Xu, Andreas Haller, Suraj Hegde +2
We study the dynamics of electrons in crystalline solids in the presence of inhomogeneous external electric and magnetic fields. We present a manifestly gauge-invariant operator-ba…
cond-mat.mes-hall2025
Stability and Nucleation of Dipole Strings in Uniaxial Chiral Magnets
Vladyslav M. Kuchkin, Nikolai S. Kiselev, Andreas Haller +3
We report on the stability of the magnetic dipole string (DS), a three-dimensional magnetic texture formed by two coupled Bloch points with opposite topological charges, separated…