Current-polarity dependent manipulation of antiferromagnetic domains

Abstract

Antiferromagnets have a number of favourable properties as active elements in spintronic devices, including ultra-fast dynamics, zero stray fields and insensitivity to external magnetic fields . Tetragonal CuMnAs is a testbed system in which the antiferromagnetic order parameter can be switched reversibly at ambient conditions using electrical currents . In previous experiments, orthogonal in-plane current pulses were used to induce 90 degree rotations of antiferromagnetic domains and demonstrate the operation of all-electrical memory bits in a multi-terminal geometry . Here, we demonstrate that antiferromagnetic domain walls can be manipulated to realize stable and reproducible domain changes using only two electrical contacts. This is achieved by using the polarity of the current to switch the sign of the current-induced effective field acting on the antiferromagnetic sublattices. The resulting reversible domain and domain wall reconfigurations are imaged using x-ray magnetic linear dichroism microscopy, and can also be detected electrically. The switching by domain wall motion can occur at much lower current densities than those needed for coherent domain switching.

8 pages, 4 figures

References in corpus (12)

• Antiferromagnetic spintronics
• Electrical switching of an antiferromagnet
• Hidden spin polarization in inversion-symmetric bulk crystals
• Relativistic Neel-order fields induced by electrical current in antiferromagnets
• Writing and Reading antiferromagnetic Mn${}_2$Au: Néel spin-orbit torques and large anisotropic magnetoresistance
• Staggering antiferromagnetic domain wall velocity in a staggered spin-orbit field
• Antiferromagnetic domain wall motion driven by spin-orbit torques
• Imaging current-induced switching of antiferromagnetic domains in CuMnAs
• Electrical switching of antiferromagnetic Mn${}_2$Au and the role of thermal activation
• Tetragonal phase of epitaxial room-temperature antiferromagnet CuMnAs
• Robust Picosecond writing of a Layered Antiferromagnet by Staggered Spin-Orbit-Fields
• THz electrical writing speed in an antiferromagnetic memory

Cited by in corpus (77)

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• Imaging the Néel vector switching in the monolayer antiferromagnet MnPSe${}_3$ with strain-controlled Ising order
• Electrical switching of antiferromagnetic Mn${}_2$Au and the role of thermal activation
• Mechanism of Néel order switching in antiferromagnetic thin films revealed by magnetotransport and direct imaging
• Electric-Field-Controlled Antiferromagnetic Spintronic Devices
• Electrical control of magnetism by electric field and current-induced torques
• Dynamics of the antiferromagnetic skyrmion induced by a magnetic anisotropy gradient
• Orbitally Dominated Rashba-Edelstein Effect in Noncentrosymmetric Antiferromagnets
• Perspective on Metallic Antiferromagnets
• Coexistence of Anomalous Hall Effect and Weak Net Magnetization in Collinear Antiferromagnet MnTe
• Propagation length of antiferromagnetic magnons governed by domain configurations
• Direct imaging of antiferromagnetic domains in Mn${}_2$Au manipulated by high magnetic fields
• Spin Seebeck imaging of spin-torque switching in antiferromagnetic Pt/NiO heterostructures
• Magnetic asymmetry induced anomalous spin-orbit torque in IrMn
• Imaging of current induced Néel vector switching in antiferromagnetic Mn${}_2$Au
• Imaging Antiferromagnetic Domains in Nickel-oxide Thin Films by Magneto-optical Voigt Effect
• Spin flop and crystalline anisotropic magnetoresistance in CuMnAs
• Ultrafast generation and dynamics of isolated skyrmions in antiferromagnetic insulators
• Intrinsic Nonlinear Hall Detection of the Néel Vector for Two-Dimensional Antiferromagnetic Spintronics
• Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses
• Nonlinear terahertz Néel spin-orbit torques in antiferromagnetic Mn${}_2$Au
• Néel Spin Orbit Torque driven antiferromagnetic resonance in Mn${}_2$Au probed by time-domain THz spectroscopy
• Readout of a antiferromagnetic spintronics systems by strong exchange coupling of Mn2Au and Permalloy
• Antiferromagnetic Switching Driven by the Collective Dynamics of a Coexisting Spin Glass
• Magnetoresistance effects in the metallic antiferromagnet Mn${}_2$Au
• Current-driven writing process in antiferromagnetic Mn2Au for memory applications
• Giant effective damping of octupole oscillation in an antiferromagnetic Weyl semimetal
• Atomically sharp domain walls in an antiferromagnet
• Identification of Néel vector orientation in antiferromagnetic domains switched by currents in NiO/Pt thin films
• Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs
• Concurrent magneto-optical imaging and magneto-transport readout of electrical switching of insulating antiferromagnetic thin films
• Unidirectional Magnetoresistance in Antiferromagnet/Heavy-metal bilayers
• Defect-driven antiferromagnetic domain walls in CuMnAs films
• Electrical Néel-order switching in magnetron-sputtered CuMnAs thin films
• Optical read-out of the Néel vector in metallic antiferromagnet Mn${}_2$Au
• Optical imaging of antiferromagnetic domains in ultrathin CoO(001) films
• Magnetic and electrical transport signatures of uncompensated moments in epitaxial thin films of the non-collinear antiferromagnet Mn${}_3$Ir
• Spin-Orbit Torque Switching of Noncollinear Antiferromagnetic Antiperovskite Manganese Nitride Mn${}_3$GaN
• Molecular beam epitaxy of CuMnAs
• Electrical transport properties of bulk tetragonal CuMnAs
• Ultrafast depinning of domain wall in notched antiferromagnetic nanostructures
• Investigation of Magnetic Anisotropy and Heat Dissipation in Thin Films of Compensated Antiferromagnet CuMnAs by Pump-probe Experiment
• Direct Observation of Antiferromagnetic Parity Violation in the Electronic Structure of Mn${}_2$Au
• Ultralow-loss domain wall motion driven by magnetocrystalline anisotropy gradient in antiferromagnetic nanowire
• Thermal effects in spintronic materials and devices: an experimentalist's guide
• Domain periodicity in an easy-plane antiferromagnet with Dzyaloshinskii-Moriya interaction
• Systematic study of nonmagnetic resistance changes due to electrical pulsing in single metal layers and metal/antiferromagnet bilayers
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Magnetocrystalline anisotropy of the easy-plane metallic antiferromagnet Fe${}_2$As
• Low-Energy Switching of Antiferromagnetic CuMnAs/ GaP Using sub-10 Nanosecond Current Pulses
• Low-energy Properties of Electrons and Holes in CuFeS${}_2$
• Room temperature weak collinear ferrimagnet with symmetry driven, large intrinsic magneto-optic signatures
• Giant Crystal Hall Effect in Collinear Antiferromagnetic $\gamma$-FeMn
• Intrinsic Dynamic Generation of Spin Polarization by Time-Varying Electric Field
• Strongly two-dimensional exchange interactions in the in-plane metallic antiferromagnet Fe${}_2$As probed by inelastic neutron scattering
• Fresnel diffraction imaging of surface nanostructure using coherent resonant X-ray scattering
• In-plane magnetic structure and exchange interactions in the high-temperature antiferromagnet Cr2Al
• Identifying Switching of Antiferromagnets by Spin-Orbit Torques
• An in-plane hexagonal antiferromagnet in the Cu-Mn-As system, Cu${}_{0.82}$Mn${}_{1.18}$As
• Probing the Manipulation of Antiferromagnetic Order in CuMnAs Films Using Neutron Diffraction
• Picosecond transfer from short-term to long-term memory in analog antiferromagnetic memory device
• High-resolution diffraction reveals magnetoelastic coupling and coherent phase separation in tetragonal CuMnAs
• Quantum metric non-linear Hall effect in an antiferromagnetic topological insulator thin-film EuSn2As2
• Controllable dispersion of domain wall movement in antiferromagnetic thin films at finite temperatures
• Gating effects in antiferromagnetic CuMnAs
• Single crystal studies and electronic structure investigation of a room-temperature semiconductor NaMnAs
• Majorana modes in helical altermagnet without net magnetism and spin-orbit coupling
• Disentangling electrical switching of antiferromagnetic NiO using high magnetic fields
• Sub-nanosecond heat-based logic, writing and reset in an antiferromagnetic magnetoresistive memory
• Emerging edge states on the surface of the epitaxial semimetal CuMnAs thin film
• Collective spin dynamics under dissipative spin Hall torque
• Persistence of large and gate-tunable anisotropic magnetoresistance in an atomically thin antiferromagnet
• Electric Current Control of Helimagnetic Chirality from a Multidomain State in the Helimagnet MnAu${}_2$
• Electrical switching of antiferromagnetic CoO | Pt across the Néel temperature