Intrinsic Nonlinear Electric Spin Generation in Centrosymmetric Magnets
Cong Xiao, Huiying Liu, Weikang Wu, Hui Wang, Qian Niu, Shengyuan A. Yang
Abstract
We propose an intrinsic nonlinear electric spin generation effect, which can dominate in centrosymmetric magnets. We reveal the band geometric origin of this effect and clarify its symmetry characters. As an intrinsic effect, it is determined solely by the material's band structure and represents a material characteristic. Combining our theory with first-principle calculations, we predict sizable nonlinear spin generation in single-layer MnBi_{2}Te_{4}, which can be detected in experiment. Our theory opens a new route for all-electric controlled spintronics in centrosymmetric magnets which reside outside of the current paradigm based on linear spin response.
Topics & Concepts
SpintronicsMagnetCondensed matter physicsSpin (aerodynamics)Nonlinear systemSymmetry (geometry)PhysicsSpin engineeringElectric fieldSpin polarizationQuantum mechanicsFerromagnetismElectronMathematicsGeometryThermodynamicsPhysics of Superconductivity and MagnetismMagnetic properties of thin filmsMagnetic and transport properties of perovskites and related materials