Topological Spin-Orbit Torque in Ferrimagnetic Weyl Semimetal

Abstract

The spin-orbit torque (SOT) in a compensated ferrimagnetic Weyl semimetal, ${\mathrm{Ti}}_2\mathrm{MnAl}$, is studied by the linear response theory. We elucidate that the SOT driven by all the occupied electronic states is present in magnetic Weyl semimetal, unlike in conventional metallic magnets. Around the energy of the Weyl points, we find that such an SOT is dominant and almost independent of the disorder. The emergence of the SOT in ${\mathrm{Ti}}_2\mathrm{MnAl}$ can be understood from the structure of the mixed Berry curvature around the Weyl points, which is similar to that of the ordinary Berry curvature.

7 pages, 5 figures

References in corpus (26)

• Berry Phase Effects on Electronic Properties
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Topological Insulators in Three Dimensions
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Spin torque switching with the giant spin Hall effect of tantalum
• Weyl Semimetal in a Topological Insulator Multilayer
• Magnetic switching by spin torque from the spin Hall effect
• Current-driven dynamics of chiral ferromagnetic domain walls
• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Electrical switching of an antiferromagnet
• Nonlocal magnetization dynamics in ferromagnetic heterostructures
• Symmetry and magnitude of spin-orbit torques in ferromagnetic heterostructures
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Evidence for reversible control of magnetization in a ferromagnetic material via spin-orbit magnetic field
• Relativistic Neel-order fields induced by electrical current in antiferromagnets
• Spin-orbit torques in Co/Pt(111) and Mn/W(001) magnetic bilayers from first principles
• Diffuse transport and spin accumulation in a Rashba two-dimensional electron gas
• Spin-orbit torques in locally and globally non-centrosymmetric crystals: Antiferromagnets and ferromagnets
• Spin-orbit torques in Co/Pd multilayer nanowires
• Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti2MnAl
• Intraband and interband spin-orbit torques in non-centrosymmetric ferromagnets
• Mixed Weyl semimetals and dissipationless magnetization control in insulators by spin-orbit torques
• Topological electric driving of magnetization dynamics in insulators
• Lossless Spin-Orbit Torque in Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Current-Induced Spin Accumulation and Magnetoresistance in Chiral Semimetals
• Effective Tight-Binding Model of Compensated Ferrimagnetic Weyl Semimetal with Spontaneous Orbital Magnetization