Concurrence of topological electrons and magnons in the Kagome ferromagnet CoCu3(OH)6Cl2

Abstract

Spin and charge are two interrelated properties of electrons. However, most of previous works on topological matter study the electronic and magnonic excitations separately. In this paper, by combining density functional theory calculations with the Schwinger boson method, we determine the topological electronic band structures and topological magnon spectrum simultaneously in the ferromagnetic ground state of the narrow-band-gap CoCu3(OH)6Cl2, which is an ABC stacking Kagome lattice material with fractional occupancy on Cu sites. This material provides an ideal platform to study the interplay of different types of topological excitations. Our work also proposes a useful method to deal with correlated topological magnetic systems with narrow band gaps.

arXiv comment5 pages, 4 figures

References in corpus (48)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Berry Phase Effects on Electronic Properties
• Topological Insulators with Inversion Symmetry
• Topological Photonics
• WannierTools: An open-source software package for novel topological materials
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Topological Crystalline Insulators
• Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBi${}_2$Te${}_4$
• Massive Dirac fermions in a ferromagnetic kagome metal
• Model Hamiltonian for Topological Insulators
• Catalogue of Topological Electronic Materials
• An equivalent expression of Z2 Topological Invariant for band insulators using Non-Abelian Berry's connection
• Topological quantization of the spin Hall effect in two-dimensional paramagnetic semiconductors
• Observation of the Magnon Hall Effect
• Theory of Thermal Hall Effect in Quantum Magnets
• Topological insulator on the kagome lattice
• Discovery of a quantum limit Chern magnet TbMn6Sn6
• Calculations of Hubbard U from first-principles
• Topological Magnon Insulator in Insulating Ferromagnet
• Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
• Strong, anisotropic anomalous Hall effect and spin Hall effect in chiral antiferromagnetic compounds Mn${}_{3}X$ ($X$ = Ge, Sn, Ga, Ir, Rh and Pt)
• Dirac and Weyl Superconductors in Three Dimensions
• Intrinsic Quantum Anomalous Hall Effect in the Kagome Lattice Cs2LiMn3F12
• Theoretical prediction of a strongly correlated Dirac metal
• A Realization of the Haldane-Kane-Mele Model in a System of Localized Spins
• Magnon Dirac materials
• Chiral Topological Insulators, Superconductors and other competing orders in three dimensions
• Topological phonons and Weyl lines in 3 dimensions
• Dirac and nodal line magnons in three-dimensional antiferromagnets
• Weak Topological Insulators and Composite Weyl Semimetals: $\beta$-Bi${}_4$X${}_4$ (X=Br, I)
• Prediction of weak topological insulators in layered semiconductors
• Topological phase transitions in the repulsively interacting Haldane-Hubbard model
• The study of magnetic topological semimetals by first principles calculations
• Theory of anomalous magnon softening in ferromagnetic manganites
• Fluctuation driven topological Hund insulators
• Ferromagnetism and Wigner crystallization in Kagome graphene and related structures
• Magnetic excitations and their anisotropy in YBCO: slave-boson mean-field analysis of bilayer t-J model
• Fluctuation-induced Topological Quantum Phase Transitions in Quantum Spin Hall and Quantum Anomalous Hall Insulators
• Topological Magnon Bands and Unconventional Superconductivity in Pyrochlore Iridate Thin Films
• Quantum Anomalous Hall Effect in Magnetic Insulator Heterostructure
• From Claringbullite to a new spin liquid candidate Cu${}_3$Zn(OH)${}_6$FCl
• Spin Excitations and Spin Wave Gap in the Ferromagnetic Weyl Semimetal Co${}_3$Sn${}_2$S${}_2$
• Prospect of quantum anomalous Hall and quantum spin Hall effect in doped kagome lattice Mott insulators
• Theory of the Interfacial Dzyaloshinskii-Moriya Interaction in Rashba Antiferromagnets
• Slave Particle Studies of the Electron Momentum Distribution in the Low Dimensional $t-J$ Model
• Turbulent hydrodynamics in strongly correlated Kagome metals
• Transition-metal distribution in kagome antiferromagnet CoCu3(OH)6Cl2 revealed by resonant x-ray diffraction

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