Tetragonal phase of epitaxial room-temperature antiferromagnet CuMnAs

Abstract

Recent studies have demonstrated the potential of antiferromagnets as the active component in spintronic devices. This is in contrast to their current passive role as pinning layers in hard disk read heads and magnetic memories. Here we report the epitaxial growth of a new high-temperature antiferromagnetic material, tetragonal CuMnAs, which exhibits excellent crystal quality, chemical order and compatibility with existing semiconductor technologies. We demonstrate its growth on the III-V semiconductors GaAs and GaP, and show that the structure is also lattice matched to Si. Neutron diffraction shows collinear antiferromagnetic order with a high Neél temperature. Combined with our demonstration of room-temperature exchange coupling in a CuMnAs/Fe bilayer, we conclude that tetragonal CuMnAs films are suitable candidate materials for antiferromagnetic spintronics.

16 pages, 5 figures, Published in Nature Communications (2013)

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Cited by in corpus (63)

• Antiferromagnetic spintronics
• Antiferromagnetic spintronics
• Electrical switching of an antiferromagnet
• Writing and Reading antiferromagnetic Mn${}_2$Au: Néel spin-orbit torques and large anisotropic magnetoresistance
• Antiferromagnetism in RuO${}_2$ as $d$-wave Pomeranchuk instability
• Design of compensated ferrimagnetic Heusler alloys for giant tunable exchange bias
• Intrinsic nonlinear Hall effect in antiferromagnetic tetragonal CuMnAs
• Imaging current-induced switching of antiferromagnetic domains in CuMnAs
• Anisotropic magnetoresistance in antiferromagnetic semiconductor Sr2IrO4 epitaxial heterostructure
• Electrical switching of antiferromagnetic Mn${}_2$Au and the role of thermal activation
• Spin-orbit torques in locally and globally non-centrosymmetric crystals: Antiferromagnets and ferromagnets
• Electric control of Dirac quasiparticles by spin-orbit torque in an antiferromagnet
• Electrically induced and detected Néel vector reversal in a collinear antiferromagnet
• Current-polarity dependent manipulation of antiferromagnetic domains
• Optical determination of the Neel vector in a CuMnAs thin-film antiferromagnet
• Group-theoretical classification of multipole order: emergent responses and candidate materials
• Orbitally Dominated Rashba-Edelstein Effect in Noncentrosymmetric Antiferromagnets
• Unified description of electronic orderings and cross correlations by complete multipole representation
• Robust Picosecond writing of a Layered Antiferromagnet by Staggered Spin-Orbit-Fields
• Nonlinear spin Hall effect in $\mathcal{P}\mathcal{T}$-symmetric collinear magnets
• Spin flop and crystalline anisotropic magnetoresistance in CuMnAs
• Exchange bias up to room temperature in the antiferromagnetic bulk hexagonal Mn3Ge
• First-principles spin-transfer torque in CuMnAs$|$GaP$|$CuMnAs junctions
• Prospect for antiferromagnetic spintronics
• Anomalous skew-scattering nonlinear Hall effect and chiral photocurrents in {\it PT}-symmetric antiferromagnets
• Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses
• Symmetry analysis of current-induced switching of antiferromagnets
• Néel Spin Orbit Torque driven antiferromagnetic resonance in Mn${}_2$Au probed by time-domain THz spectroscopy
• Systematic study of magnetic linear dichroism and birefringence in (Ga,Mn)As
• Room temperature tetragonal noncollinear antiferromagnet Pt${}_2$MnGa
• Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs
• Defect-driven antiferromagnetic domain walls in CuMnAs films
• Piezospintronic effect in antiperovskite Mn${}_3$GaN
• Band structure of CuMnAs probed by optical and photoemission spectroscopy
• Electrical Néel-order switching in magnetron-sputtered CuMnAs thin films
• Physical properties of the tetragonal CuMnAs: a first-principles study
• Spin-flip-driven giant magneto-transport in A-type antiferromagnet NaCrTe2
• Molecular beam epitaxy of CuMnAs
• Electrical transport properties of bulk tetragonal CuMnAs
• Investigation of Magnetic Anisotropy and Heat Dissipation in Thin Films of Compensated Antiferromagnet CuMnAs by Pump-probe Experiment
• Noncollinear Antiferromagnetic Spintronics
• Spin-flop phase transition in the orthorhombic antiferromagnetic topological semimetal Cu0.95MnAs
• Defect-induced magnetic structure of CuMnSb
• The stability and physical properties of the tetragonal phase of bulk CuMnAs antiferromagnet
• Hysteretic effects and magnetotransport of electrically switched CuMnAs
• Tetragonal CuMnAs alloy: role of defects
• Perpendicular magnetic anisotropy in bulk and thin-film CuMnAs for antiferromagnetic memory applications
• Low-Energy Switching of Antiferromagnetic CuMnAs/ GaP Using sub-10 Nanosecond Current Pulses
• Intrinsic nonlinear Nernst and Seebeck effect
• Moderate Magnetic Field Induced Large Exchange Bias Effect in Ferrimagnetic 314-Sr3YCo4O10.5 Material
• Combining advanced photoelectron spectroscopy approaches to analyse deeply buried GaP(As)/Si(100) interfaces: Interfacial chemical states and complete band energy diagrams
• Magnetic anisotropy by Rashba spin-orbit coupling in antiferromagnetic thin films
• Strongly two-dimensional exchange interactions in the in-plane metallic antiferromagnet Fe${}_2$As probed by inelastic neutron scattering
• An in-plane hexagonal antiferromagnet in the Cu-Mn-As system, Cu${}_{0.82}$Mn${}_{1.18}$As
• Antiferromagnetic CuMnAs: Ab initio description of finite temperature magnetism and resistivity
• Two-step magnetic ordering into a canted state in ferrimagnetic monoclinic Mn${}_3$As${}_2$
• Antiferromagnetic multi-level memory cell
• Two-Terminal Electrical Detection of the Néel Vector via Longitudinal Antiferromagnetic Nonreciprocal Transport
• Thermally Stable Peltier Controlled Vacuum Chamber for Electrical Transport Measurements
• High-resolution diffraction reveals magnetoelastic coupling and coherent phase separation in tetragonal CuMnAs
• Single crystal studies and electronic structure investigation of a room-temperature semiconductor NaMnAs
• Gating effects in antiferromagnetic CuMnAs
• Emerging edge states on the surface of the epitaxial semimetal CuMnAs thin film