Transport Theory of Metallic B20 Helimagnets
arXiv:1412.7177 · doi:10.1103/PhysRevB.91.134401
Abstract
B20 compounds are a class of cubic helimagnets harboring nontrivial spin textures such as spin helices and skyrmions. It has been well understood that the Dzyaloshinskii-Moriya (DM) interaction is the origin of these textures, and the physics behind the DM interaction is the spin-orbital coupling (SOC). However the SOC shows its effect not only on the spins, but also on the electrons. In this paper, we will discuss effects of the SOC on the electron and spin transports in B20 compounds. An effective Hamiltonian is presented from symmetry analysis, and the spin-orbital coupling therein shows anomalous behaviors in anisotropic magnetoresistance (AMR) and helical resistance. New effects such as inverse spin-galvanic effect is proposed, and the origin of the DM interaction is discussed.
arXiv comment13 pages, 5 figures
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- Berry curvature induced magnetotransport in 3D noncentrosymmetric metals
- Role of Berry curvature in the generation of spin currents in Rashba systems
- Chiral anomalies in 3D spin-orbit coupled metals: electrical, thermal, and gravitational anomaly
- Thermoelectric and optical probes for a Fermi surface topology change in noncentrosymmetric metals
- Hydrodynamic theory of chiral angular momentum generation in metals
- Dynamical polarization and plasmons in noncentrosymmetric metals
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- Surface ferromagnetism in a chiral topological semimetal CoSi
- Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
- Chiral Anomaly Induced Transverse Planar Transport Phenomena in Three Dimensional Spin-Orbit Coupled Metals