Crossover from Diffusive to Superfluid Transport in Frustrated Magnets

Abstract

We investigate the spin transport across the magnetic phase diagram of a frustrated antiferromagnetic insulator and uncover a drastic modification of the transport regime from spin diffusion to spin superfluidity. Adopting a triangular lattice accounting for both nearest neighbor and next-nearest neighbor exchange interactions with easy-plane anisotropy, we perform atomistic spin simulations on a two-terminal configuration across the full magnetic phase diagram. We found that as long as the ground state magnetic moments remain in-plane, irrespective of whether the magnetic configuration is ferromagnetic, collinear or non-collinear antiferromagnetic, the system exhibits spin superfluid behavior with a device output that is independent on the value of the exchange interactions. When the magnetic frustration is large enough to compete with the easy-plane anisotropy and cant the magnetic moments out of the plane, the spin transport progressively evolves towards the diffusive regime. The robustness of spin superfluidity close to magnetic phase boundaries is investigated and we uncover the possibility for {\em proximate} spin superfluidity close to the ferromagnetic transition.

arXiv comment9 pages, 7 figures

References in corpus (59)

• Antiferromagnetic spintronics
• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Dirac semimetal in three dimensions
• Quantum Spin Liquid States
• Nonlocal magnetization dynamics in ferromagnetic heterostructures
• Spin Liquid State in an Organic Mott Insulator with Triangular Lattice
• Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Atomistic spin model simulations of magnetic nanomaterials
• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Long distance transport of magnon spin information in a magnetic insulator at room temperature
• Bose-Einstein Condensation in Magnetic Insulators
• Spin-lattice coupling in frustrated antiferromagnets
• Electrically controlled long-distance spin transport through an antiferromagnetic insulator
• Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal
• Scalar spin chirality and quantum Hall effect on a triangular lattice
• Non-collinear Antiferromagnets and the Anomalous Hall Effect
• Non-collinear Magnetoelectronics
• Evidence for a spinon Fermi surface in a triangular lattice quantum spin liquid candidate
• Antiferromagnonic Spin Transport from Y${}_3$Fe${}_5$O${}_{12}$ into NiO
• Orbital ferromagnetism and anomalous Hall effect in antiferromagnets on distorted fcc lattice
• Spin-polarized current in non-collinear antiferromagnets
• Spin liquid phase of the $S=\frac{1}{2}$ $J_1-J_2$ Heisenberg model on the triangular lattice
• Spin currents and spin superfluidity
• Weyl magnons in breathing pyrochlore antiferromagnets
• Competing Spin Liquid States in the Spin-$1/2$ Heisenberg Model On Triangular Lattice
• Superfluid spin transport through antiferromagnetic insulators
• Anomalous Hall effect and topological defects in antiferromagnetic Weyl semimetals: Mn${}_3$Sn/Ge
• Superfluid Spin Transport through Easy-Plane Ferromagnetic Insulators
• Experimental Signatures of Spin Superfluid Ground State in Canted Antiferromagnet Cr2O3 via Nonlocal Spin Transport
• Enhanced spin pumping efficiency in antiferromagnetic IrMn thin films around the magnetic phase transition
• Conduction of spin currents through insulating oxides
• Spin mixing conductance at a well-controlled platinum/yttrium iron garnet interface
• Full angular dependence of the spin Hall and ordinary magnetoresistance in epitaxial antiferromagnetic NiO(001)/Pt thin films
• Gapless spin-liquid phase in an extended spin 1/2 triangular Heisenberg model
• Spin colossal magnetoresistance in an antiferromagnetic insulator
• Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
• Anisotropic-Exchange Magnets on a Triangular Lattice: Spin Waves, Accidental Degeneracies, and Dual Spin Liquids
• Dissipationless Spin Transport in Thin Film Ferromagnets
• Transformation of spin current by antiferromagnetic insulators
• Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3
• Magnon thermal Hall effect in kagome antiferromagnets with Dzyaloshinskii-Moriya interactions
• Topological Thermal Hall Effect in Frustrated Kagomé Antiferromagnets
• Long-Distance Spin Transport Through a Graphene Quantum Hall Antiferromagnet
• Spin Superfluidity in Biaxial Antiferromagnetic Insulators
• Two-dimensional spin liquid behaviour in the triangular-honeycomb antiferromagnet TbInO${}_3$
• Dynamics of noncollinear antiferromagnetic textures driven by spin current injection
• Spin superfluidity and long-range transport in thin-film ferromagnets
• Spin Transport through the metallic antiferromagnet FeMn
• Magnon topology and thermal Hall effect in trimerized triangular lattice antiferromagnet
• Weyl magnons in noncoplanar stacked kagome antiferromagnets
• Weyl magnons in pyrochlore antiferromagnets with all-in-all-out orders
• Spin Superfluidity in the $\nu =0$ Quantum Hall State of Graphene
• Magnetic Domain Walls as Hosts of Spin Superfluids and Generators of Skyrmions
• Berry-phase effects and electronic dynamics in noncollinear antiferromagnetic texture
• Topological Magnetic Excitations on the Distorted Kagome Antiferromagnets: Applications to Volborthite, Vesignieite, and Edwardsite
• Electrically Driven Bose-Einstein Condensation of Magnons in Antiferromagnets
• Quantum Anomalous Hall Effect and Anderson Chern Insulating Regime in Noncollinear Antiferromagnetic 3Q State
• Spin-gap study of the spin-$\frac{1}{2}$ $J_1$--$J_2$ model on the triangular lattice

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