Spin Quenching and Transport by Hidden Dzyaloshinskii-Moriya Interactions

Abstract

Explicit interactions, \textit{e.g.}, dipolar and exchange couplings, usually govern magnetization dynamics. Some interactions may be hidden from the global crystal symmetry. We report that in a large class of \textit{uniaxial} antiferromagnets, a \textit{hidden} Dzyaloshinskii-Moriya interaction with retaining global inversion symmetry quenches the spin of magnon along the Néel vector $\mathbf{n}$, thus forbidding its angular-momentum flow. Some magnon spins, termed ``nodal" and ``corner" spins, survive when they distribute \textit{singularly} at the hot spots, i.e., high-symmetric degeneracy points in the Brillouin zone, and are protected by crystal symmetries. The biased magnetic field along $\mathbf{n}$ broadens such distributions, allowing bulk spin transport with unique signatures in the magnetic field and temperature dependencies. This explains recent experiments and highlights the role of hidden interaction.

arXiv comment12 pages, 6 figures

References in corpus (44)

• Antiferromagnetic spintronics
• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Spin Caloritronics
• Long distance transport of magnon spin information in a magnetic insulator at room temperature
• Electrically controlled long-distance spin transport through an antiferromagnetic insulator
• Linear spin wave theory for single-Q incommensurate magnetic structures
• Antiferromagnetic spin Seebeck Effect
• Subterahertz spin pumping from an insulating antiferromagnet
• Enhancement of Thermally Injected Spin Current through an Antiferromagnetic Insulator
• Spin Oscillations in Antiferromagnetic NiO Triggered by Circularly Polarized Light
• Spin Nernst Effect of Magnons in Collinear Antiferromagnets
• Electric-field control of spin waves at room temperature in multiferroic BiFeO3
• Thermal generation of spin current in an antiferromagnet
• Orbital effects in solids: basics, recent progress and opportunities
• Magnon spin Nernst effect in antiferromagnets
• Ferroelectrically induced weak-ferromagnetism in a single-phase multiferroic by design
• Chirality-induced asymmetric magnetic nucleation in Pt/Co/AlOx ultrathin microstructures
• Twisted magnetic patterns: Exploring the Dzyaloshinskii--Moriya vector
• Magnon transport in quasi-two-dimensional van der Waals antiferromagnets
• Coherent spin-wave transport in an antiferromagnet
• Microscopic Model and Phase Diagrams of the Multiferroic Perovskite Manganites
• Spin Insulatronics
• Signature of magnon Nernst effect in an antiferromagnetic insulator
• Antiferromagnetic Spin Wave Field-Effect Transistor
• Dirac and nodal line magnons in three-dimensional antiferromagnets
• Chirality as Generalized Spin-Orbit Interaction in Spintronics
• Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle effect
• Room temperature antiferromagnetic resonance and inverse spin-Hall voltage in canted antiferromagnets
• Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO${}_3$
• Spin Pumping of an Easy-Plane Antiferromagnet Enhanced by Dzyaloshinskii-Moriya Interaction
• Inelastic neutron scattering studies of YFeO${}_3$
• Magnon Spin-Momentum Locking: Various Spin Vortices and Dirac Magnons in Noncollinear Antiferromagnets
• Long distance magnon transport in the van der Waals antiferromagnet CrPS${}_4$
• Dissipationless Multiferroic Magnonics
• Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering
• Dirac magnons, nodal lines, and nodal plane in elemental gadolinium
• Observation of Vector Spin Seebeck Effect in a Noncollinear Antiferromagnet
• Low-energy spin dynamics of orthoferrites AFeO${}_3$ (A = Y, La, Bi)
• Antiferromagnetism in two-dimensional materials: progress and computational challenges
• Persistence of antiferromagnetic order upon La substitution in the $4d^4$ Mott insulator Ca${}_2$RuO${}_4$
• Low temperature Terahertz Spectroscopy of LaFeO${}_3$, PrFeO${}_3$, ErFeO${}_3$, and LuFeO${}_3$: Quasimagnon resonances and ground multiplet transitions
• Probing magnetic anisotropy and spin-reorientation transition in 3D antiferromagnet, Ho${}_{0.5}$Dy${}_{0.5}$FeO${}_3|$Pt using spin Hall magnetoresistance
• Vector spin Seebeck effect and spin swapping effect in antiferromagnetic insulators with non-collinear spin structure
• Topological transverse spin transport in a canted antiferromagnet/heavy metal heterostructure

Cited by in corpus (4)

• Staggered Dzyaloshinskii-Moriya inducing weak ferromagnetism in centrosymmetric altermagnets and weak ferrimagnetism in noncentrosymmetric altermagnets
• Dominant orbital magnetization in the prototypical altermagnet MnTe
• Ultrastrong magnon-photon coupling in superconductor/antiferromagnet/superconductor heterostructures at terahertz frequencies
• Band topology and dynamic multiferroicity induced from dynamical Dzyaloshinskii-Moriya interactions in centrosymmetric lattices