2015/01/31 by Olena Gomonay, Gomonay Olena · 30 citations
Materials Science · Physics and Astronomy · #Antiferromagnetism #Berry connection and curvature #Condensed matter physics #Electron #Ferromagnetism #Geometric phase #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Skyrmion #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Spintronics #Texture (cosmology) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.91.144421
published in Physical Review B 91(14) (American Physical Society)
arxiv created 2015/02/23 · openalex publication_date 2015/04/27 · arxiv updated 2015/05/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Antiferromagnets (AFMs), in contrast to ferromagnets, show a nontrivial magnetic structure with zero net magnetization. However, they share a number of spintronic effects with ferromagnets, including spin pumping and spin-transfer torques. Both phenomena stem from the coupled dynamics of free carriers and localized magnetic moments. In the present paper I study the adiabatic dynamics of spin-polarized electrons in a metallic AFM exhibiting a noncollinear 120^\ensuremath∘ magnetic structure. I show that the slowly varying AFM spin texture produces a non-Abelian gauge potential related to the time and space gradients of the N'eel vectors. Corresponding emergent electric and magnetic fields induce rotation of spin and influence the orbital dynamics of free electrons. I discuss both the possibility of a topological spin Hall effect in the vicinity of topological AFM solitons with nonzero curvature and rotation of the electron spin traveling through the AFM domain wall.