Intrinsic topological phases in Mn$_2$Bi$_2$Te$_5$ tuned by the layer magnetization

Yue Li; Yadong Jiang; Jinlong Zhang; Zhaochen Liu; Zhongqin Yang; Jing Wang

doi:10.1103/PhysRevB.102.121107

Intrinsic topological phases in Mn$_2$Bi$_2$Te$_5$ tuned by the layer magnetization

Mesoscale and Nanoscale Physics 2020-09-30 v2 Materials Science

Authors: Yue Li , Yadong Jiang , Jinlong Zhang , Zhaochen Liu , Zhongqin Yang , Jing Wang

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Abstract

The interplay between band topology and magnetic order could generate a variety of time-reversal-breaking gapped topological phases with exotic topological quantization phenomena, such as quantum anomalous Hall (QAH) insulators and axion insulators (AxI). Here by combining analytic models and first-principles calculations, we predict QAH and AxI phases can be realized in thin film of an intrinsic antiferromagnetic van der Waal material Mn $_2$ Bi $_2$ Te $_5$ . The phase transition between QAH and AxI is tuned by the layer magnetization, which would provide a promising platform for chiral superconducting phases. We further present a simple and unified continuum model that captures the magnetic topological features, and is generic for Mn $_2$ Bi $_2$ Te $_5$ and MnBi $_2$ Te $_4$ family materials.

Keywords

topological phases quantum anomalous hall insulator axion insulator mn2bi2te5 layer magnetization first-principles calculations

Cite

@article{arxiv.2001.06133,
  title  = {Intrinsic topological phases in Mn$_2$Bi$_2$Te$_5$ tuned by the layer magnetization},
  author = {Yue Li and Yadong Jiang and Jinlong Zhang and Zhaochen Liu and Zhongqin Yang and Jing Wang},
  journal= {arXiv preprint arXiv:2001.06133},
  year   = {2020}
}

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6 pages, 4 figures, 1 table

Intrinsic topological phases in Mn$_2$Bi$_2$Te$_5$ tuned by the layer magnetization

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