Surface altermagnetism with d-wave spin splitting occurs in centrosymmetric collinear antiferromagnets only when no sublattice-exchanging antiunitary symmetry survives at the surface, as shown by symmetry analysis and first-principles calculations on V3Al and BaMn2Sb2 versus MnPt.
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Cs1-δV2Te2O hosts hidden altermagnetism consisting of spatially alternating altermagnetic layers whose local spin polarizations are verified by spin-resolved ARPES.
A symmetry-based stacking strategy with layer-flip realizes odd-parity altermagnetism from nonrelativistic orbital orders, hosting quantum spin Hall phases with helical edge states.
Coupling trilayer TI film with z-oriented d-wave altermagnet gaps helical edges while preserving two Weyl points, yielding 2D higher-order Weyl semimetals with corner states.
Helicity-resolved Raman and DFT+U plus linear spin-wave theory show plaid-like magnon spin splitting and chirality in MnTe2 dictated by its sublattice symmetries.
Magnetic instabilities in generic two-orbital systems are governed by the full interplay of the bare susceptibility tensor and spin interaction matrix, not solely by the quantum geometry of a single-channel susceptibility.
citing papers explorer
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$d$-wave Surface Altermagnetism in Centrosymmetric Collinear Antiferromagnets
Surface altermagnetism with d-wave spin splitting occurs in centrosymmetric collinear antiferromagnets only when no sublattice-exchanging antiunitary symmetry survives at the surface, as shown by symmetry analysis and first-principles calculations on V3Al and BaMn2Sb2 versus MnPt.
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Observation of hidden altermagnetism in Cs$_{1-\delta}$V$_2$Te$_2$O
Cs1-δV2Te2O hosts hidden altermagnetism consisting of spatially alternating altermagnetic layers whose local spin polarizations are verified by spin-resolved ARPES.
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Odd-Parity Altermagnetism Originated from Orbital Orders
A symmetry-based stacking strategy with layer-flip realizes odd-parity altermagnetism from nonrelativistic orbital orders, hosting quantum spin Hall phases with helical edge states.
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Two-dimensional higher-order Weyl semimetals
Coupling trilayer TI film with z-oriented d-wave altermagnet gaps helical edges while preserving two Weyl points, yielding 2D higher-order Weyl semimetals with corner states.
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Plaid-Like Spin Splitting and Chirality of Magnon Bands in Antiferromagnetic MnTe$_2$
Helicity-resolved Raman and DFT+U plus linear spin-wave theory show plaid-like magnon spin splitting and chirality in MnTe2 dictated by its sublattice symmetries.
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Reevaluating Quantum Geometric Criteria for Itinerant Magnetic Instabilities
Magnetic instabilities in generic two-orbital systems are governed by the full interplay of the bare susceptibility tensor and spin interaction matrix, not solely by the quantum geometry of a single-channel susceptibility.