Spin-current diode with a monoaxial chiral magnet

Abstract

Monoaxial chiral magnets exhibit a chiral conical magnetic state in a magnetic field parallel to the chiral axis. The conical spins carry the potential for nonreciprocal transport phenomena, as they break both spatial inversion and time reversal symmetries. Here we study the spin-dependent transport in the chiral conical magnetic state, using the Landauer method based on Green's functions for a one-dimensional Kondo lattice model. We show that the system exhibits nonreciprocal spin transport, which depends on the chirality, period, cone angle, and the polarization of the spin current. In particular, we find the distinct cone angle dependence between the spin textures with long and short periods. We also show that the nonreciprocity is related with the spin states of itinerant electrons near the leads. Our results indicate that the chiral cone acts as a spin-current diode, which can be flexibly controlled by a magnetic field.

arXiv comment5 pages, 5 figures

References in corpus (20)

• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Topological Hall effect in the A-phase of MnSi
• Emergent electrodynamics of skyrmions in a chiral magnet
• Unusual Hall Effect Anomaly in MnSi Under Pressure
• Electrical magnetochiral effect induced by chiral spin fluctuations
• Nonlinear spin current generation in noncentrosymmetric spin-orbit coupled systems
• Finite-Temperature Properties of Three-Dimensional Classical Chiral Helimagnets
• Chiral Soliton Lattice Formation in Monoaxial Helimagnet Yb(Ni${}_{1-x}$Cu${}_x$)${}_3$Al${}_9$
• Controlling the topological sector of magnetic solitons in exfoliated Cr${}_{1/3}$NbS${}_2$ crystals
• Theory of spin current in chiral helimagnet
• Understanding the H-T phase diagram of the mono-axial helimagnet
• Transport magnetic currents driven by moving kink crystal in chiral helimagnets
• Phase transitions and ordering structures of a model of chiral helimagnet in three dimensions
• Nucleation, instability, and discontinuous phase transitions in monoaxial helimagnets with oblique fields
• Mesoscopic Hall effect driven by chiral spin order
• Lock-in of a Chiral Soliton Lattice by Itinerant Electrons
• Monte Carlo study of magnetoresistance in a chiral soliton lattice
• Hidden Galilean symmetry, conservation laws and emergence of spin current in the soliton sector of chiral helimagnet
• Tunable spin dynamics in chiral soliton lattice
• Chiral helimagnetic state in a Kondo lattice model with the Dzyaloshinskii-Moriya interaction

Cited by in corpus (5)

• Anomalous electrical magnetochiral effect by chiral spin fluctuation
• Canted antiferromagnetic order in the monoaxial chiral magnets V${}_{1/3}$TaS${}_2$ and V${}_{1/3}$NbS${}_2$
• Multifarious skyrmion phases on a trilayer triangular lattice
• Theory of charge and spin pumping in atomic-scale spiral magnets
• Electrical conductivity in helical and conical magnetic states