Theoretical study of spin accumulation and domain wall motion in two-dimensional magnetic kagome lattice

摘要

It is known that a two-dimensional electron system becomes a quantum Hall state and generates a chiralone-dimensional edge conduction when an external magnetic field is applied perpendicular the system.Similarly, this edge conduction is also induced in a magnetic material where the Chern number can be definein the presence of the magnetization, and it is called a “quantum anomalous Hall state”. If the magneticmaterial has an inhomogeneous magnetic texture, the chiral one-dimensional edge conductions are formedin each magnetic domain, and they have different directions from each other. Because of the existence oflocalized charges on the domain wall, it is expected to control the domain wall by applying the externalelectric field.