Circularly polarized light induces even-wave spin splittings in nonmagnetic centrosymmetric systems with SOC, producing s-, d-, and g-wave patterns like those in ferromagnets and enabling Chern insulator phases.
Odd-Parity Altermagnetism Originated from Orbital Orders
10 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
Odd-parity spin-splitting plays a central role in spintronics and unconventional superconductivity, yet its microscopic realization in collinear magnetic systems remains elusive. We propose a general symmetry-based strategy for realizing odd-parity altermagnetism by stacking two noncentrosymmetric monolayers in an interlayer antiferromagnetic configuration and applying an in-plane layer-flip operation. In this setting, odd-parity spin-splitting originates from nonrelativistic orbital orders rather than spin-orbit coupling, and is protected by an effective time-reversal symmetry despite the explicit time-reversal symmetry being broken. By exploiting lattice symmetries, our framework enables the realization of both $p$- and $f$-wave altermagnets. The resulting models generically host quantum spin Hall insulator phases, featuring topologically protected helical edge states and quantized spin Hall conductance. Our work expands the landscape of altermagnetic phases and opens a pathway toward spintronics and unconventional superconductivity in altermagnetic systems.
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UNVERDICTED 10roles
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TbB4 hosts component-resolved mixed-parity spin textures in a 3D compensated magnet, with p/f-wave odd parity in-plane and d-wave even parity out-of-plane, driven by staggered Berry phase from scalar spin chirality.
Bilayer odd-parity coplanar magnets constructed from altermagnets realize tunable nonrelativistic SOC spin textures equivalent to relativistic counterparts.
Odd-parity magnon splitting is classified in 2D collinear antiferromagnets and induced by circularly polarized light or loop currents, driving topological transitions with chiral edge modes in bilayers.
Collinear spin-orbital magnets host mixed-parity altermagnetism as an intermediate regime between even- and odd-parity forms, inducible by circularly polarized light in a two-sublattice two-orbital model.
Elliptically polarized light irradiation converts d-wave altermagnets into Chern insulators, yielding quantized thermal Hall conductivity and gap-edge peaks in the thermoelectric Hall response.
D-wave altermagnets on Bi2Se3 surfaces induce a layer Hall effect with zero net Hall conductance for antiparallel Néel vectors and a quantized Chern state for parallel vectors.
Extended s-wave altermagnets are introduced as fully gapped spin-compensated states with isotropic spin splitting arising from valley-exchange symmetries, shown via effective two-valley and microscopic models with guiding principles for identification.
Odd-parity altermagnetism reconstructs local topology in the Chern-insulating phase of the Haldane-Hubbard model without changing the total Chern number.
P-wave orbital magnetism protected by combined translation and time-reversal symmetry is proposed to originate from loop-current-induced orbital textures in a 2D Dirac lattice model, measurable via orbital Hall conductivity.
citing papers explorer
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Light-Induced Even-Wave Spin Splittings in Nonmagnetic Centrosymmetric Systems with Spin-Orbit Coupling
Circularly polarized light induces even-wave spin splittings in nonmagnetic centrosymmetric systems with SOC, producing s-, d-, and g-wave patterns like those in ferromagnets and enabling Chern insulator phases.
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Unconventional Mixed-Parity Magnetism in Rare-Earth Tetraborides
TbB4 hosts component-resolved mixed-parity spin textures in a 3D compensated magnet, with p/f-wave odd parity in-plane and d-wave even parity out-of-plane, driven by staggered Berry phase from scalar spin chirality.
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Nonrelativistic Spin-Orbit-Coupling Effects in Odd-Parity Coplanar Magnets
Bilayer odd-parity coplanar magnets constructed from altermagnets realize tunable nonrelativistic SOC spin textures equivalent to relativistic counterparts.
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Odd-Parity Magnons
Odd-parity magnon splitting is classified in 2D collinear antiferromagnets and induced by circularly polarized light or loop currents, driving topological transitions with chiral edge modes in bilayers.
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Mixed-Parity Altermagnetism in Collinear Spin-Orbital Magnets
Collinear spin-orbital magnets host mixed-parity altermagnetism as an intermediate regime between even- and odd-parity forms, inducible by circularly polarized light in a two-sublattice two-orbital model.
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Anomalous thermoelectric and thermal Hall effects in irradiated altermagnets
Elliptically polarized light irradiation converts d-wave altermagnets into Chern insulators, yielding quantized thermal Hall conductivity and gap-edge peaks in the thermoelectric Hall response.
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Layer Hall effect induced by altermagnetism
D-wave altermagnets on Bi2Se3 surfaces induce a layer Hall effect with zero net Hall conductance for antiparallel Néel vectors and a quantized Chern state for parallel vectors.
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Extended s-wave altermagnets
Extended s-wave altermagnets are introduced as fully gapped spin-compensated states with isotropic spin splitting arising from valley-exchange symmetries, shown via effective two-valley and microscopic models with guiding principles for identification.
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The odd-parity altermagnetism induced reconstruction of the Chern-insulating phase in Haldane-Hubbard model
Odd-parity altermagnetism reconstructs local topology in the Chern-insulating phase of the Haldane-Hubbard model without changing the total Chern number.
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$P$-wave Orbital Magnetism
P-wave orbital magnetism protected by combined translation and time-reversal symmetry is proposed to originate from loop-current-induced orbital textures in a 2D Dirac lattice model, measurable via orbital Hall conductivity.