Quantum topological Hall effect and noncoplanar antiferromagnetism in K${}_{0.5}$RhO${}_2$

Abstract

Quantum anomalous Hall (QAH) phase is a two-dimensional bulk ferromagnetic insulator with a nonzero Chern number in presence of spin-orbit coupling (SOC) but absence of applied magnetic fields. Associated metallic chiral edge states host dissipationless current transport in electronic devices. This intriguing QAH phase has recently been observed in magnetic impurity-doped topological insulators, {\it albeit}, at extremely low temperatures. Based on first-principles density functional calculations, here we predict that layered rhodium oxide K${}_{0.5}$RhO${}_2$ in noncoplanar chiral antiferromagnetic state is an unconventional three-dimensional QAH insulator with a large band gap and a Neel temperature of a few tens Kelvins. Furthermore, this unconventional QAH phase is revealed to be the exotic quantum topological Hall effect caused by nonzero scalar spin chirality due to the topological spin structure in the system and without the need of net magnetization and SOC.

arXiv comment5 pages, 4 figures

References in corpus (22)

• Berry Phase Effects on Electronic Properties
• Anomalous Hall effect
• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
• Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells
• Quantum Anomalous Hall Effect in Graphene from Rashba and Exchange Effects
• Spin Anisotropy and Quantum Hall Effect in the Kagome Lattice - Chiral Spin State based on a Ferromagnet-
• Quantum anomalous Hall effect and related topological electronic states
• Scalar spin chirality and quantum Hall effect on a triangular lattice
• Superconductivity Phase Diagram of Na(x)CoO(2).1.3H(2)O
• Bulk-boundary correspondence of topological insulators from their Green's functions
• Quantized Anomalous Hall Effect in Two-Dimensional Ferromagnets - Quantum Hall Effect from Metal -
• Quantized Anomalous Hall Effects in Skyrmion Crystal
• Coulomb-Enhanced Spin-Orbit Splitting: The Missing Piece in the Sr2RhO4 Puzzle
• High Chern number quantum anomalous Hall phases in graphene ribbons with Haldane orbital coupling
• {\it Ab initio} studies of spin-spiral waves and exchange interactions in 3{\it d} transition metal atomic chains
• Colossal Thermoelectric Power Factor in K${}_{7/8}$RhO${}_2$
• Transport properties of the layered Rh oxide K_0.49RhO_2
• Phase Diagram of the Spin-$1/2$ Triangular $J_1$-$J_2$ Heisenberg Model on a 3-leg Cylinder
• Optical Study of the Electronic Structure and Correlation Effects in K0.49RhO2

Cited by in corpus (30)

• Crystal Thermal Transport in Altermagnetic RuO2
• Quantum anomalous Hall effect in ferromagnetic transition metal halides
• Quantum Anomalous Hall Effect in Antiferromagnetism
• Spin-order dependent anomalous Hall effect and magneto-optical effect in noncollinear antiferromagnets Mn${}_{3}X$N ($X$ = Ga, Zn, Ag, and Ni)
• Topological magneto-optical effects and their quantization in noncoplanar antiferromagnets
• Topological Thermal Hall Effect in Frustrated Kagomé Antiferromagnets
• Spin-Polarized Antiferromagnetic Spintronics
• Spin-Orientation Dependent Topological States in Two-Dimensional Antiferromagnetic NiTl${}_2$S${}_4$ Monolayers
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• Chern-insulator phase in antiferromagnets
• Topological Magnetic Excitations on the Distorted Kagome Antiferromagnets: Applications to Volborthite, Vesignieite, and Edwardsite
• Magnon Hall Effect without Dzyaloshinskii-Moriya Interaction
• Large anomalous Nernst coefficient in an oxide Skyrmion crystal Chern insulator
• Quantum Anomalous Hall and Half-metallic Phases in Ferromagnetic (111) Bilayers of 4d and 5d Transition Metal Perovskites
• Topological insulator associated with quantum anomalous Hall phase in ferromagnetic perovskite superlattices
• Gapped nodal planes drive a large topological Nernst effect in a chiral lattice antiferromagnet
• Enhanced Seebeck coefficient by a filling-induced Lifshitz transition in KxRhO2
• Interaction-driven Quantum Anomalous Hall Effect in Halogenated Hematite Nanosheets
• Time-reversal-breaking topological phases in antiferromagnetic Sr${}_2$FeOsO${}_6$ films
• Strain and onsite-correlation tunable quantum anomalous Hall phases in ferromagnetic (111) LaXO${}_3$ bilayers (X$=$Pd, Pt)
• Anomalous ferromagnetism and magneto-optical Kerr effect in semiconducting double perovskite Ba2NiOsO6 and its (111) (Ba2NiOsO6)/(BaTiO3)10 superlattice
• Effect of collective spin excitation on electronic transport in topological spin texture
• Topological thermal Hall effect due to Weyl magnons
• Topological antiferromagnetic spintronics: Part of a collection of reviews on antiferromagnetic spintronics
• Magnons in a two dimensional transverse field XXZ model
• Second-order topological magneto-optical effects in noncoplanar antiferromagnets
• Ferroelectrically Switchable Half-Quantized Hall Effect
• Valley selecting current partition at zero-line mode of quantum anomalous Hall topologies
• Magnetic-Field and Strain Engineering of Modulated Transverse Transport in Altermagnetic Topological Materials
• Topological Aspects of Antiferromagnets