Hyperspatial projections of decorated Ammann-Beenker and Penrose lattices host interaction-induced Néel order that realizes g-wave and h-wave altermagnetism compatible with quasicrystalline symmetries.
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P-wave magnets exhibit spontaneous parity breaking of spin-polarized Fermi surfaces in time-reversal symmetric crystals, demonstrated via symmetry analysis in CeNiAsO with a predicted large spontaneous resistivity anisotropy.
Phonon Hall viscosity distinguishes altermagnets through strain-space Berry curvature monopoles and shows sensitivity to electronic features like gapped Dirac points.
Symmetry constraints in altermagnets enable QSHE with spin-valley or spin-valley-layer locking, realized in monolayer Nb2SeTeO and bilayer Hf3Se3Te2 according to first-principles calculations.
Roughness-robust surface altermagnetism is allowed only in PT-symmetric antiferromagnets and can be generated or suppressed by roughness averaging over compensated or uncompensated terminations.
D-wave altermagnets host a robust finite-temperature pair-density-wave superconducting phase driven by momentum-dependent spin splitting.
Collinear altermagnets can exhibit tunable mixed-parity spin textures and new dissipationless spin Hall responses when driven by two-color light or coupled to P-odd loop-current order, creating (P,T)=(-,-) or (+,+) states.
Vacancy-driven reconstruction of V2X2 monolayers creates an inverse Lieb network that realizes d-wave altermagnetism with (cos kx - cos ky) spin splitting and zero net magnetization.
Ultrafast light induces momentum-dependent altermagnetic spin splitting in antiferromagnets via photoexcited charge redistribution and lattice distortion that breaks effective time-reversal symmetry.
Slow phonons suppress the spin Edelstein effect in strained Rashba d-wave altermagnets through energy renormalization that collapses the Fermi surface, producing tunable anisotropic depolarization.
Graphene antidot superlattices develop interaction-induced i-wave altermagnetic spin splitting from their intrinsic magnetic instability.
MBE-grown alpha-MnTe films on GaAs(111)B exhibit Raman modes at 121 and 140 cm-1 identified as all symmetry-allowed optical phonons of the hexagonal NiAs lattice via experiment and DFT calculations.
Janus FeSeX monolayers host coexisting d-wave altermagnetism without SOC and a SOC-induced topological gap with quantized spin Hall conductivity and nontrivial invariants.
NV-center quantum relaxometry encodes momentum-space anisotropy of altermagnetic spin diffusion, enabling local distinction from antiferromagnets.
A review that classifies two-dimensional altermagnets via spin-group theory, lists materials with large spin splitting, and outlines design strategies for experimental realization.
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P-wave magnets
P-wave magnets exhibit spontaneous parity breaking of spin-polarized Fermi surfaces in time-reversal symmetric crystals, demonstrated via symmetry analysis in CeNiAsO with a predicted large spontaneous resistivity anisotropy.