Topological transitions of spin-excitations in insulating chiral antiferromagnets

Abstract

We present a comprehensive study of strain-induced topological magnon phase transitions in insulating three-dimensional (3D) topological chiral antiferromagnets on the kagome-lattice. We show that by applying (100) uniaxial strain, 3D insulating antiferromagnetic Weyl magnons (WMs) manifest as an intermediate phase between a strain-induced 3D magnon Chern insulator (MCI) with integer Chern numbers and a 3D trivial magnon insulator with zero Chern number. In addition, we show that strain suppresses the topological thermal Hall conductivity of magnons in these systems. Due to the similarity between 3D insulating and metallic kagome chiral antiferromagnets, we envision that the current results could also manifest in the 3D antiferromagnetic topological Weyl semimetals Mn${}_3$Sn\slash Ge.

arXiv comment7 pages, 8 figures

References in corpus (43)

• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
• Weyl Semimetal in a Topological Insulator Multilayer
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Experimental observation of Weyl points
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Observation of the Magnon Hall Effect
• Evidence for Magnetic Weyl Fermions in a Correlated Metal
• Theory of Thermal Hall Effect in Quantum Magnets
• Theoretical prediction of rotating magnon wavepacket in ferromagnets
• Giant Anomalous Hall Effect in the Chiral Antiferromagnet Mn3Ge
• Cluster multipole theory for anomalous Hall effect in antiferromagnets
• Dirac Fermions in Antiferromagnetic Semimetal
• Spin chirality on a two-dimensional frustrated lattice
• The thermal Hall effect of spin excitations in a Kagome magnet
• Rotational motion of magnon and thermal Hall effect
• Symmetry breaking due to Dzyaloshinsky-Moriya interactions in the kagome lattice
• Elastic Gauge Fields in Weyl Semimetals
• Weyl magnons in breathing pyrochlore antiferromagnets
• Effect of lattice geometry on magnon Hall effect in ferromagnetic insulators
• Tunable magnon Weyl points in ferromagnetic pyrochlores
• Topological honeycomb magnon Hall effect: A calculation of thermal Hall conductivity of magnetic spin excitations
• Elemental topological Dirac semimetal: α-Sn on InSb(111)
• Strain induced Chiral Magnetic Effect in Weyl semimetals
• Dirac and nodal line magnons in three-dimensional antiferromagnets
• Magnon thermal Hall effect in kagome antiferromagnets with Dzyaloshinskii-Moriya interactions
• Magnonic Weyl semimetal in pyrochlore ferromagnets
• Topological spin excitations observed in a three-dimensional antiferromagnet
• Topological Thermal Hall Effect in Frustrated Kagomé Antiferromagnets
• Discovery of coexisting Dirac and triply degenerate magnons in a three-dimensional antiferromagnet
• Barlowite: A Spin-1/2 Antiferromagnet with a Geometrically Perfect Kagome Motif
• Chiral anomaly of Weyl magnons in stacked honeycomb ferromagnets
• Weyl Fermions in antiferromagnetic Mn(3)Sn and Mn(3)Ge
• Weak ferromagnetic order breaking the threefold rotational symmetry of the underlying kagomé lattice in CdCu${}_3$(OH)${}_6$(NO${}_3$)${}_2\cdot$H${}_2$O
• Scalar Chiral Spin-1/2 Order on Kagome Lattices in Nd3Sb3Mg2O14
• Strain-induced quantum topological phase transitions in Na3Bi
• Weyl magnons in pyrochlore antiferromagnets with all-in-all-out orders
• Weyl magnons in noncoplanar stacked kagome antiferromagnets
• Three-Dimensional Quantum Anomalous Hall Effect in Ferromagnetic Insulators
• Spin Hall and Nernst effects of Weyl magnons
• Magnonic triply-degenerate nodal points

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