Magnetic states in a three-dimensional topological Kondo insulator

Abstract

We theoretically study the magnetic phase diagram of a three-dimensional topological Kondo insulator by means of real-space dynamical mean field theory. We find that ferromagnetically ordered states become stable upon hole doping. Besides a wide ferromagnetic phase, we observe surface magnetism close to half-filling, which corresponds to an A-type antiferromagnetic state. We further study the impact of the magnetism on the symmetry protected surface states and find that depending on the surface and the magnetization direction, surface states are still protected by reflection symmetry present in our model. The symmetry protected surface states are shifted away by the magnetization from their original high symmetry momenta in the Brillouin zone. Remarkably, due to the magnetization, the surface states are deformed, resulting in the appearance of arcs in the momentum resolved spectrum.

11 pages

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Cited by in corpus (16)

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• Evolution of Floquet Topological Quantum States in Driven Semiconductors
• Behavior of Floquet Topological Quantum States in Optically Driven Semiconductors
• Quantum metric on the Brillouin Zone in correlated electron systems and its relation to topology for Chern insulators
• Topological Green function of interacting systems
• Impact of the Rashba Spin Orbit Coupling on $f$-electron Materials
• Two relativistic Kondo effects: Classification with particle and antiparticle impurities
• Surface exceptional points in a topological Kondo insulator
• Revealing a charge-density-wave gap in the predicted weak topological insulator HoSbTe
• ${\mathcal{Z}}_2$ classification for a novel antiferromagnetic topological insulating phase in three-dimensional topological Kondo insulator
• Low-energy excitations and transport functions of the one-dimensional Kondo insulator
• Magnetic and topological transitions in three-dimensional topological Kondo insulator
• Hinge non-Hermitian skin effect in the single-particle properties of a strongly correlated f-electron system
• Valence transition in topological Kondo insulator
• Mott transition and magnetism in a fragile topological insulator