Time reversal reserved spin valve and spin transistor based on unconventional $p$-wave magnets

Abstract

The anisotropic spin splitting in unconventional magnets opens new opportunities for realizing spintronic functionalities without relying on net magnetization or relativistic spin-orbit coupling. Here, we propose a spin valve and a spin transistor based on unconventional $p$-wave magnets (UPMs). The spin valve is realized in a junction where a normal metal is sandwiched between two UPMs whose exchange-field strength vectors are oriented transverse to the junction direction. The conductance of such a device is governed by the spin alignment between two UPMs: when their strength vectors are parallel, the spin-state alignment enables efficient electron transmission, leading to a high-conductance state; in contrast, the antiparallel configuration suppresses the conductance owing to the opposite spin orientations. Furthermore, the spin-valve can be extended to a spin transistor by replacing the central normal metal with another UPM with a longitudinally oriented strength vector and a perpendicular spin polarization axis. The central UPM enables uniform spin precession with the same precession frequency for all transverse modes. Both devices can be electrically controlled by modulating the strength vectors of UPMs. These findings establish UPMs as a promising platform for developing spintronic devices without net magnetization or relativistic spin-orbit coupling.

9 pages, 5 figures

References in corpus (69)

• New Perspectives for Rashba Spin-Orbit Coupling
• Altermagnetism: spin-momentum locked phase protected by non-relativistic symmetries
• Spin-orbit coupling in quantum gases
• Crystal Hall effect in Collinear Antiferromagnets
• Efficient Electrical Spin-Splitter Based on Non-Relativistic Collinear Antiferromagnetism
• Multifunctional Antiferromagnetic Materials with Giant Piezomagnetism and Noncollinear Spin Current
• Observation of spin splitting torque in a collinear antiferromagnet RuO2
• Giant and tunneling magnetoresistance effects from anisotropic and valley-dependent spin-momentum interactions in antiferromagnets
• Spin current generation in organic antiferromagnets
• Altermagnetism: Exploring New Frontiers in Magnetism and Spintronics
• Spontaneous anomalous Hall effect arising from an unconventional compensated magnetic phase in a semiconductor
• Observation of spin-splitter torque in collinear antiferromagnetic RuO${}_2$
• Observation of plaid-like spin splitting in a noncoplanar antiferromagnet
• Crystal Thermal Transport in Altermagnetic RuO2
• Spin-group symmetry in magnetic materials with negligible spin-orbit coupling
• Antiferroelectric Altermagnets: Antiferroelectricity Alters Magnets
• Enumeration and representation theory of spin space groups
• Ferroelectric switchable altermagnetism
• Imaging mesoscopic spin Hall flow: Spatial distribution of local spin currents and spin densities in and out of multiterminal spin-orbit coupled semiconductor nanostructures
• X-ray Magnetic Circular Dichroism in Altermagnetic $\alpha$-MnTe
• Absence of altermagnetic spin splitting character in rutile oxide RuO${}_2$
• Perovskite as a spin current generator
• Electrically Controllable Crystal Chirality Magneto-Optical Effects in Collinear Antiferromagnets
• Catalog of Unconventional Magnons in Collinear Magnets
• Anisotropy of the anomalous Hall effect in the altermagnet candidate Mn${}_5$Si${}_3$ films
• Can spintronic field effect transistors compete with their electronic counterparts?
• Minimal Models and Transport Properties of Unconventional $p$-Wave Magnets
• Superconducting phenomena in systems with unconventional magnets
• Unconventional p-wave and finite-momentum superconductivity induced by altermagnetism through the formation of Bogoliubov Fermi surface
• Third-order and fifth-order nonlinear spin-current generation in $g$-wave and $i$-wave altermagnets, and perfectly nonreciprocal spin-current in $f$-wave magnets
• Theory of Tunneling Spectroscopy in Unconventional $p$-wave Magnet-Superconductor Hybrid Structures
• Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings
• Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets
• Anomalous Hall effect in antiferromagnetic perovskites
• Coulomb Drag in Altermagnets
• Metallic $p$-wave magnet with commensurate spin helix
• Classification of pair symmetries in superconductors with unconventional magnetism
• X-ray Magnetic Circular Dichroism in RuO${}_2$
• Electrical switching of altermagnetism
• Ab initio prediction of anomalous Hall effect in antiferromagnetic CaCrO${}_3$
• Magneto-optical Kerr effect and magnetoelasticity in weak ferromagnetic RuF${}_4$ monolayer
• Odd-parity Magnetism Driven by Antiferromagnetic Exchange
• Magnetic geometry induced quantum geometry and nonlinear transports
• Orientation-dependent transport in junctions formed by $d$-wave altermagnets and $d$-wave superconductors
• All-electrically controlled spintronics in altermagnetic heterostructures
• Electrons in helical magnetic field: a new class of topological metals
• Coexistence of $p$-wave magnetism and superconductivity
• Crossed Andreev reflection in collinear $p$-wave magnet/triplet superconductor junctions
• Quantum transport theory for unconventional magnets: Interplay of altermagnetism and p-wave magnetism with superconductivity
• Transverse Spin current at the normal/p-wave magnet junctions
• Emergence of tunable exceptional points in altermagnet-ferromagnet junctions
• Hidden altermagnetism
• Light-induced charge and spin Hall currents in materials with $C_{4}K$ symmetry
• Floquet engineering spin triplet states in unconventional magnets
• Purely electrical detection of the spin-splitting vector in $p$-wave magnets based on linear and nonlinear conductivities
• Fingerprint of Non-Hermiticity in d-wave Altermagnet
• The fate of $p$-wave spin polarization in helimagnets with Rashba spin-orbit coupling
• Quantum geometry and elliptic optical dichroism in $p$-wave magnets
• Tunneling conductance in superconducting junctions with $p$-wave unconventional magnets breaking time-reversal symmetry
• Light-induced Floquet spin-triplet Cooper pairs in unconventional magnets
• Nonequilibrium Green function modelling of transport in mesoscopic systems
• Néel vector controlled exceptional contours in $p$-wave magnet-ferromagnet junctions
• Sliding-induced ferrovalley polarization and possible antiferromagnetic half-metal in bilayer altermagnets
• Tunneling spin Hall effect induced by unconventional $p$-wave magnetism
• Engineering subgap states in superconductors by the symmetry of altermagnetism
• Orientation dependent anomalous Hall and spin Hall currents at junctions of altermagnets with $p$-wave magnets
• Classification and design of two-dimensional altermagnets
• Incommensuration in odd-parity antiferromagnets
• Altermagnetic Spin Precession and Spin Transistor