Spin waves scattering on a Bloch point

R G Elías (1) , V L Carvalho-Santos (1) , A D Núñez (2) , Alberto Verga (3)

1 Departamento de Física, Universidad de Santiago de Chile
2 Departamento de Física, Facultad de Ciencias Físicas y Matemáticas Universidad de Chile
3 CPT - Centre de Physique Théorique - UMR 7332

We show that, after a transformation, the dynamics of linear perturbations (spin waves) around a singular Bloch point soliton is formally equivalent to a quantum system of an electron in a magnetic monopole field. The analytical solution to this problem is known and allows us to find the spectrum and the scattering of a wave in a Bloch point field.

Domaines: Matière Condensée [cond-mat]

R G Elías, V L Carvalho-Santos, A D Núñez, Alberto Verga. Spin waves scattering on a Bloch point. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90, pp.224414 - 224414. ⟨10.1103/PhysRevB.90.224414⟩. ⟨hal-01500482⟩