Time-Reversal-Even Nonlinear Current Induced Spin Polarization

Abstract

We propose a time-reversal-even spin generation in second order of electric fields, which dominates the current induced spin polarization in a wide class of centrosymmetric nonmagnetic materials, and leads to a novel nonlinear spin-orbit torque in magnets. We reveal a quantum origin of this effect from the momentum space dipole of the anomalous spin polarizability. First-principles calculations predict sizable spin generations in several nonmagnetic hcp metals, in monolayer TiTe${}_2$, and in ferromagnetic monolayer MnSe${}_2$, which can be detected in experiment. Our work opens up the broad vista of nonlinear spintronics in both nonmagnetic and magnetic systems.

4 pages, 2 figures

References in corpus (13)

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• Orbital magnetization in periodic insulators
• Current induced electron spin polarization in strained semiconductors
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• Theory of orbital magnetoelectric response
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• Current-induced Orbital and Spin Magnetizations in Crystals with Helical Structure
• Anisotropic spin Hall effect from first principles
• Generation of spin currents and spin densities in systems with reduced symmetry
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• Magnetic geometry induced quantum geometry and nonlinear transports
• Nonlinear Magnetoelectric Effect under Magnetic Octupole Order: Its Application to a $d$-Wave Altermagnet and a Pyrochlore Lattice with All-In/All-Out Magnetic Order
• Room temperature ferromagnetic semiconductors through metal-semiconductor transition in monolayer MnSe2
• Direct observation of current-induced nonlinear spin torque in Pt-Py bilayers
• Intrinsic gyrotropic magnetic current from Zeeman quantum geometry
• Planar Hall Plateau in Magnetic Weyl Semimetals
• Nonlinear spin and orbital Edelstein effect in WTe2
• Nonlinear Edelstein Effect in Strongly Correlated Electron Systems
• Intrinsic Dynamic Generation of Spin Polarization by Time-Varying Electric Field
• Nonlinear optics driven magnetism reorientation in semiconductors
• Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
• Quantum Geometric Origin of Orbital Magnetization
• Probing quantum geometric nonlinear magnetization via second-harmonic magneto-optical Kerr effect
• Quantum Christoffel Nonlinear Magnetization
• Nonlinear Magnetoelectric Edelstein Effect
• Light-induced nonlinear Edelstein effect under ferroaxial ordering
• Prediction of a layer nonlinear Hall effect in bilayer nonmagnetic or antiferromagnetic systems