Thermal and thermoelectric properties of an antiferromagnetic topological insulator MnBi${}_2$Te${}_4$

Abstract

The discovery of an intrinsic antiferromagnetic topological insulator (AFM-TI) in MnBi${}_2$Te${}_4$ has attracted intense attention, most of which lies on its electrical properties. In this paper, we report electronic, thermal, and thermoelectric transport studies of this newly found AFM-TI. The temperature and magnetic field dependence of its resistivity, thermal conductivity, and Seebeck coefficient indicate strong coupling between charge, lattice, and spin degrees of freedom in this system. Furthermore, MnBi${}_2$Te${}_4$ exhibits a large anomalous Nernst signal, which is associated with non-zero Berry curvature of the field-induced canted antiferromagnetic state.

arXiv commentsubmitted in Oct. 2021, accepted for publication in Phys. Rev. B

References in corpus (34)

• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBi${}_2$Te${}_4$
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Prediction and observation of the first antiferromagnetic topological insulator
• Intrinsic magnetic topological insulators in van der Waals layered MnBi${}_2$Te${}_4$-family materials
• Massive Dirac fermions in a ferromagnetic kagome metal
• Topological axion states in magnetic insulator MnBi${}_2$Te${}_4$ with the quantized magnetoelectric effect
• Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator
• Large anomalous Nernst effect at room temperature in a chiral antiferromagnet
• Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal
• The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Gapless surface Dirac cone in antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Crystal growth and magnetic structure of MnBi2Te4
• Anomalous Nernst effect beyond the magnetization scaling relation in the ferromagnetic Heusler compound Co${}_2$MnGa
• Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
• A van der Waals antiferromagnetic topological insulator with weak interlayer magnetic coupling
• Spin scattering and noncollinear spin structure-induced intrinsic anomalous Hall effect in antiferromagnetic topological insulator $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$
• Anomalous Nernst Effect in Dirac Semimetal Cd3As2
• Nernst effect in metals and superconductors: a review of concepts and experiments
• Realization of an intrinsic, ferromagnetic topological state in MnBi8Te13
• Competing magnetic interactions in the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Berry curvature unravelled by the Nernst effect in Mn${}_3$Ge
• Topological electronic structure and intrinsic magnetization in MnBi${}_4$Te${}_7$: a Bi${}_2$Te${}_3$-derivative with a periodic Mn sublattice
• Crystal and magnetic structures of magnetic topological insulators MnBi${}_2$Te${}_4$ and MnBi${}_4$Te${}_7$
• Intrinsic anomalous Nernst effect amplified by disorder in a half-metallic semimetal
• Magnetic topological insulator MnBi6Te10 with zero-field ferromagnetic state and gapped Dirac surface states
• Universal gapless Dirac cone and tunable topological states in (MnBi${}_2$Te${}_4$)${}_m$(Bi${}_2$Te${}_3$)${}_n$ heterostructures
• Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi${}_4$Te${}_7$ and MnBi${}_6$Te${}_{10}$
• Interlayer magnetophononic coupling in MnBi2Te4
• Evidence for a magnetic-field induced ideal type-II Weyl state in antiferromagnetic topological insulator Mn(Bi1-xSbx)2Te4
• Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
• Quantum Oscillations in the Field-induced Ferromagnetic State of MnBi${}_{2-x}$Sb${}_x$Te${}_4$

Cited by in corpus (5)

• Magnetic field-controlled lattice thermal conductivity in MnBi2Te4
• Magnetic order-dependent giant tunneling magnetoresistance and electroresistance in van der Waals antiferromagnetic-multiferroic tunnel junctions
• ErMn${}_6$Sn${}_6$: A Promising Kagome Antiferromagnetic Candidate for Room-Temperature Nernst Effect-based thermoelectrics
• Evidence of Weyl Fermion Enhanced Thermal Conductivity Under Magnetic Fields in Antiferromagnetic Topological Insulator Mn(Bi(1-x)Sb(x))2Te4
• Magnetic Interactions and Cluster Formation: Boosting Surface Thermopower in Topological Insulators