Macroscopic altermagnetic domains in MnTe were visualized as two distinct time-reversal symmetry breaking regions with large Kerr rotations independent of net magnetization, controllable by external stimuli.
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Phonon Hall viscosity distinguishes altermagnets through strain-space Berry curvature monopoles and shows sensitivity to electronic features like gapped Dirac points.
Spin qubits in altermagnetic quantum dots get a field-free, ellipticity-tunable splitting, a complete electrical gate set, and noise channels that cause relaxation rather than dephasing.
Monolayer V2O in a buckled Lieb structure is proposed as a room-temperature 2D altermagnet with 1.2 eV momentum-dependent spin splitting, out-of-plane anisotropy, and ~40 (ħ/e) S cm^{-1} spin Hall conductivity.
Altermagnets exhibit a resonant third-order intrinsic anomalous Hall effect from the Berry curvature quadrupole, serving as a quantum geometric transport fingerprint.
Coulomb interactions drive altermagnetism in the Kagome Hubbard model at Dirac filling, producing an insulating state with split magnons detectable by inelastic neutron scattering.
Altermagnetic sublattice order imposes momentum-dependent nodes in the superconducting gap for local pairing interactions and favors nonunitary equal-spin triplet superconductivity at large spin splitting.
Length and velocity gauges are shown to be equivalent for the adiabatic dc quantum geometric nonlinear conductivity, with Fermi sea terms canceling to leave a Fermi-surface contribution from the band-normalized quantum metric.
Symmetry reduction at surfaces of bulk altermagnets produces spin-degenerate bands when aligned with symmetry planes and modified spin splitting otherwise, including a g-to-d wave conversion in particular thin-film orientations.
Cr doping of FeSb2 breaks time-reversal symmetry with bulk short-range spin-compensated order below ~3.5 K but does not stabilize long-range collinear altermagnetic order.
In a 2D model Hamiltonian, orbital Hall conductivity quantizes when altermagnetism exceeds sp-hybridization while spin Hall quantizes when Rashba SOC is weaker, with both independent of the other coupling and arising from Fermi-surface Berry curvature.
Symmetry-guided graph neural networks trained on 200 structures screen 100,000+ iTMD configurations to identify 55 antiferromagnetic spintronics candidates with d-wave altermagnetism or giant T-odd spin Edelstein effects.
Finite-momentum superconducting states occur when odd-frequency Cooper pairing correlations in the uniform state reach large amplitudes, identified via poles of the pair fluctuation propagator in weak-coupling theory.
citing papers explorer
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Magneto-optical imaging of macroscopic altermagnetic domains in MnTe
Macroscopic altermagnetic domains in MnTe were visualized as two distinct time-reversal symmetry breaking regions with large Kerr rotations independent of net magnetization, controllable by external stimuli.
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Anomalous Hall viscosity of altermagnets
Phonon Hall viscosity distinguishes altermagnets through strain-space Berry curvature monopoles and shows sensitivity to electronic features like gapped Dirac points.
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All-electrical dephasing-protected spin qubits in altermagnets
Spin qubits in altermagnetic quantum dots get a field-free, ellipticity-tunable splitting, a complete electrical gate set, and noise channels that cause relaxation rather than dephasing.
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Novel 2D Altermagnetic Vanadium Oxide with a Buckled Lieb Structure
Monolayer V2O in a buckled Lieb structure is proposed as a room-temperature 2D altermagnet with 1.2 eV momentum-dependent spin splitting, out-of-plane anisotropy, and ~40 (ħ/e) S cm^{-1} spin Hall conductivity.
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Third-order intrinsic anomalous Hall effect as a transport fingerprint of altermagnets
Altermagnets exhibit a resonant third-order intrinsic anomalous Hall effect from the Berry curvature quadrupole, serving as a quantum geometric transport fingerprint.
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Altermagnetism in an interacting model of Kagome materials
Coulomb interactions drive altermagnetism in the Kagome Hubbard model at Dirac filling, producing an insulating state with split magnons detectable by inelastic neutron scattering.
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Inherent momentum-dependent gap structure of altermagnetic superconductors
Altermagnetic sublattice order imposes momentum-dependent nodes in the superconducting gap for local pairing interactions and favors nonunitary equal-spin triplet superconductivity at large spin splitting.
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Length--Velocity Gauge Equivalence of Quantum Geometric Nonlinear Conductivity
Length and velocity gauges are shown to be equivalent for the adiabatic dc quantum geometric nonlinear conductivity, with Fermi sea terms canceling to leave a Fermi-surface contribution from the band-normalized quantum metric.
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Projected altermagnetism by symmetry reduction at surfaces and in thin films
Symmetry reduction at surfaces of bulk altermagnets produces spin-degenerate bands when aligned with symmetry planes and modified spin splitting otherwise, including a g-to-d wave conversion in particular thin-film orientations.
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Experimental investigation of altermagnetic order in Cr-doped FeSb2
Cr doping of FeSb2 breaks time-reversal symmetry with bulk short-range spin-compensated order below ~3.5 K but does not stabilize long-range collinear altermagnetic order.
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Quantized orbital and spin Hall transport: interplay between $sp$-hybridization, altermagnetism and spin-orbit coupling
In a 2D model Hamiltonian, orbital Hall conductivity quantizes when altermagnetism exceeds sp-hybridization while spin Hall quantizes when Rashba SOC is weaker, with both independent of the other coupling and arising from Fermi-surface Berry curvature.
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Symmetry-guided and AI-accelerated design of intercalated transition metal dichalcogenides for antiferromagnetic spintronics
Symmetry-guided graph neural networks trained on 200 structures screen 100,000+ iTMD configurations to identify 55 antiferromagnetic spintronics candidates with d-wave altermagnetism or giant T-odd spin Edelstein effects.
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Finite-momentum superconducting states due to odd-frequency Cooper pairing correlations
Finite-momentum superconducting states occur when odd-frequency Cooper pairing correlations in the uniform state reach large amplitudes, identified via poles of the pair fluctuation propagator in weak-coupling theory.