Direct imaging of antiferromagnetic domains in Mn${}_2$Au manipulated by high magnetic fields

Abstract

In the field of antiferromagnetic (AFM) spintronics, information about the Néel vector, AFM domain sizes, and spin-flop fields is a prerequisite for device applications but is not available easily. We have investigated AFM domains and spin-flop induced changes of domain patterns in Mn2Au(001) epitaxial thin films by X-ray magnetic linear dichroism photoemission electron microscopy (XMLD-PEEM) using magnetic fields up to 70 T. As-prepared Mn${}_2$Au films exhibit AFM domains with an average size $\sim$ 1 $\mu$m. Application of a 30T field, exceeding the spin-flop field, along a magnetocrystalline easy axis, dramatically increases the AFM domain size with Néel vectors perpendicular to the applied field direction. The width of Néel type domain walls (DW) is below the spatial resolution of the PEEM and therefore can only be estimated from an analysis of the DW profile to be smaller than 80 nm. Furthermore, using the values for the DW width and the spin-flop field, we evaluate an in-plane anisotropy constant ranging between 1 and 17 $\mu$eV/f.u.

References in corpus (9)

• Antiferromagnetic spintronics
• Antiferromagnetic spintronics
• Electrical switching of an antiferromagnet
• 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
• Spin-orbit coupling induced anisotropy effects in bimetallic antiferromagnets: A route towards antiferromagnetic spintronics
• Imaging current-induced switching of antiferromagnetic domains in CuMnAs
• Current-polarity dependent manipulation of antiferromagnetic domains
• Concepts of antiferromagnetic spintronics

Cited by in corpus (32)

• Broken Kramers' degeneracy in altermagnetic MnTe
• Magnetic imaging of antiferromagnetic domain walls
• Perspective on Metallic Antiferromagnets
• Observation of three-state nematicity in the triangular lattice antiferromagnet Fe${}_{1/3}$ NbS${}_2$
• Spin Seebeck imaging of spin-torque switching in antiferromagnetic Pt/NiO heterostructures
• 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
• Narrow-band tunable THz detector in antiferromagnets via Néel spin-orbit torque and spin-transfer torque
• Observation of current-induced switching in non-collinear antiferromagnetic IrMn${}_3$ by differential voltage measurements
• 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
• Magnetoresistance effects in the metallic antiferromagnet Mn${}_2$Au
• Current-driven writing process in antiferromagnetic Mn2Au for memory applications
• Interlayer exchange coupling through Ir-doped Cu spin Hall material
• Optical read-out of the Néel vector in metallic antiferromagnet Mn${}_2$Au
• Current induced switching in Mn2Au from first principles
• Magnetic and electrical transport signatures of uncompensated moments in epitaxial thin films of the non-collinear antiferromagnet Mn${}_3$Ir
• Spin structure and spin Hall magnetoresistance of epitaxial thin films of the insulating non-collinear antiferromagnet SmFeO${}_3$
• Magneto-optic Response of the Metallic Antiferromagnet Fe${}_2$As to Ultrafast Temperature Excursions
• Direct Observation of Antiferromagnetic Parity Violation in the Electronic Structure of Mn${}_2$Au
• Revealing hidden magneto-electric multipoles using Compton scattering
• Domain periodicity in an easy-plane antiferromagnet with Dzyaloshinskii-Moriya interaction
• Coupling of ferromagnetic and antiferromagnetic spin dynamics in Mn${}_2$Au/NiFe thin-film bilayers
• Hysteretic effects and magnetotransport of electrically switched CuMnAs
• Uniaxial Néel Vector Control in Perovskite Oxide Thin Films by Anisotropic Strain Engineering
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Identifiying the domain wall spin structure in current-induced switching of antiferromagnetic NiO/Pt
• Inertial domain wall characterization in layered multisublattice antiferromagnets
• Identifying Switching of Antiferromagnets by Spin-Orbit Torques
• Probing the Manipulation of Antiferromagnetic Order in CuMnAs Films Using Neutron Diffraction
• Single crystal studies and electronic structure investigation of a room-temperature semiconductor NaMnAs