The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Higher-Order Topology of the Axion Insulator EuIn2As2
Open accessAbstract
Based on first-principles calculations and symmetry analysis, we propose that EuIn_{2}As_{2} is a long-awaited axion insulator with antiferromagnetic (AFM) long-range order. Characterized by the parity-based invariant Z_{4}=2, the topological magnetoelectric effect is quantized with θ=π in the bulk, with a band gap as large as 0.1 eV. When the staggered magnetic moments of the AFM phase are along the a or b axis, it is also a topological crystalline insulator phase with gapless surface states emerging on (100), (010), and (001) surfaces. When the magnetic moments are along the c axis, both the (100) and (001) surfaces are gapped, and the material can also be viewed as a high-order topological insulator with one-dimensional chiral states existing on the hinges between those gapped surfaces. We have calculated both the topological surface states and the hinge state in different phases of the system, respectively, which can be detected by angle-resolved photoemission spectroscopy or STM experiments.
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Cites
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Cited by
Xie, B., Wang, H.-X., Zhang, X., Zhan, P., Jiang, J.-H., Lu, M., & Chen, Y. (2021) · Nature Reviews Physics · doi:10.1038/s42254-021-00323-4 · Cited by 543
Colloquium : Quantum anomalous Hall effect
Chang, C.-Z., Liu, C.-X., & MacDonald, A. H. (2023) · Reviews of Modern Physics · doi:10.1103/revmodphys.95.011002 · Cited by 508
Irvsp: To obtain irreducible representations of electronic states in the VASP
Gao, J., Wu, Q., Persson, C., & Wang, Z. (2021) · Computer Physics Communications · doi:10.1016/j.cpc.2020.107760 · Cited by 361
Self-citationDirac Surface States in Intrinsic Magnetic Topological Insulators EuSn2As2 and MnBi2nTe3n+1
Li, H., Gao, S.-Y., Duan, S.-F., Xu, Y.-F., Zhu, K.-J., Tian, S.-J., Gao, J.-C., Fan, W.-H., Rao, Z.-C., Huang, J.-R., et al. (2019) · Physical Review X · doi:10.1103/physrevx.9.041039 · Cited by 298
Self-citationTopoelectrical circuit octupole insulator with topologically protected corner states
Bao, J., Zou, D., Zhang, W., He, W., Sun, H., & Zhang, X. (2019) · Physical Review B · doi:10.1103/physrevb.100.201406 · Cited by 149
“The other kinds of second- and third-order topological phases have also been observed in acoustic, photonic and electronic systems [22-44].”
Background
Metadata
- Authors
- Xu, Y., Song, Z., Wang, Z., Weng, H., & Dai, X.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2019-06-25
- Volume
- 122
- Issue
- 25
- Pages
- 256402-256402
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2923485233
- Cited by
- 353
- References
- 34
- FWCI
- 19.45
- Type
- journal article
- Language
- en
- Open access
- green
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