Magnetic and transport properties in the magnetic topological insulators 
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Shi, Mengzhu; Lei, Bin; Zhu, Changan; H., D.; Cui, Jianhua; Sun, Zhe; Ying, Jianjun; Chen, X. H.

doi:10.1103/physrevb.100.155144

Cited by 94 publications

(63 citation statements)

References 36 publications

(31 reference statements)

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“…Recently, it was predicted that this physics can be realized in MnBi 2 Te 4 [14,15]. Subsequently, single crystals of MnBi 2n Te 3n+1 were grown and physical properties, including electrical and thermal transport, magnetization, neutron scattering, etc., were measured which support possible realization of the axion insulator in these materials [16][17][18][19][20][21]. While some ARPES studies reported observation of a gapped surface state in MnBi 2n Te 3n+1 and thus possible axion insulator behavior [22][23][24][25], many others showed evidence that the surface state in this material remains gapless or diminished gap down to low temperatures [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 78%

Intrinsic axion insulating behavior in antiferromagnetic MnBi6Te10

Wang

Slager

et al. 2020

Phys. Rev. B

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A striking feature of time-reversal symmetry (TRS) protected topological insulators (TIs) is that they are characterized by a half integer quantum Hall effect on the boundary when the surface states are gapped by time-reversal breaking perturbations. While TRS-protected TIs have become increasingly under control, magnetic analogs are still a largely unexplored territory with novel rich structures. In particular, magnetic topological insulators can also host a quantized axion term in the presence of lattice symmetries. Since these symmetries are naturally broken on the boundary, the surface states can develop a gap without external manipulation. In this paper, we combine theoretical analysis, density-functional calculations and experimental evidence to reveal intrinsic axion insulating behavior in MnBi6Te10. The quantized axion term arises from the simplest possible mechanism in the antiferromagnetic regime where it is protected by inversion symmetry and the product of a fractional translation and TRS. The anticipated gapping of the Dirac surface state at the edge is subsequently experimentally established using angle resolved photoemission spectroscopy (ARPES). As a result, this system provides the magnetic analog of the simplest TRS-protected TI with a single, gapped Dirac cone at the surface.

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Section: Introductionmentioning

confidence: 78%

Intrinsic axion insulating behavior in antiferromagnetic MnBi6Te10

Wang

Slager

et al. 2020

Phys. Rev. B

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“…were grown via a solid-state reaction method as described in an earlier study [5,40]. X-ray diffraction measurements were carried out on each sample to identify the correct phase.…”

Section: Sample Preparation and Characterization Single Crystals Of mentioning

confidence: 99%

Universal gapless Dirac cone and tunable topological states in (MnBi2Te4)m(

Shi

et al. 2020

Phys. Rev. B

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“…MnBi 2 Te 4 (n = 0) and MnBi 4 Te 7 (n = 1) show typical A-type antiferromagnetism (AFM), with the interlayer antiferromagnetic interaction being weaker than the stronger interlayer ferromagnetic (FM) interaction. 150,151 If the interval thickness continues to increase, the interlayer exchange coupling will be further weakened. Magnetization tests and theoretical calculations show that magnetospheric decouples from n = 2 and 3.…”

Section: Antiferromagnetismmentioning

confidence: 99%