Design of Antiferromagnetic Second-Order Band Topology with Rotation Topological Invariants in Two Dimensions

Zhan, Fangyang; Qin, Zheng; Xu, Dong-Hui; Zhou, Xiaoyuan; Ma, Da-Shuai; Wang, Rui

doi:10.1021/acs.nanolett.4c01817

Nano Lett.

2024

DOI: 10.1021/acs.nanolett.4c01817

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Design of Antiferromagnetic Second-Order Band Topology with Rotation Topological Invariants in Two Dimensions

Fangyang Zhan,

Zheng Qin,

Dong-Hui Xu

et al.

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Cited by 2 publications

References 71 publications

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Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi₄Te₇ and Mn₂Bi₂Te₅ Families

Lin,

Cao,

Chen

et al. 2024

J. Phys. Chem. C

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In the past several years, the discoveries of multiple magnetic topological phases in MnBi 2 Te 4 and its analogues have highlighted the research in modern condensed matter physics. The topological crystalline insulator (TCI) phase protected by space group symmetry is a valuable platform to understand the profound relation of crystalline symmetry and band topology in materials. Via first-principles calculations, we predict that the MnBi 2 Te 4 analogues, MnBi 4 Te 7 , MnSb 4 Te 7 , Mn 2 Bi 2 Te 5 , and Eu 2 Bi 2 Te 5 , are all mirror-symmetry-protected TCI candidates when magnetized along the in-plane x orientation. Gapless surface states are expected for the van der Waals terminations in this phase. Particularly, the magnetic easy axis of Eu 2 Bi 2 Te 5 is along the in-plane direction in our calculations. These findings open opportunities for research and application of magnetic TCIs and magnetically controllable topological quantum phase transitions.

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Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi₄Te₇ and Mn₂Bi₂Te₅ Families

Lin,

Cao,

Chen

et al. 2024

J. Phys. Chem. C

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Multi-level chiral edge states in Janus M₂XS₂Se₂ (M = V, Ti; X = W, Mo) monolayers with high Curie temperature and sizable nontrivial topological gaps

Deng,

Yin,

et al. 2024

Phys. Chem. Chem. Phys.

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Design of Antiferromagnetic Second-Order Band Topology with Rotation Topological Invariants in Two Dimensions

Cited by 2 publications

References 71 publications

Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi₄Te₇ and Mn₂Bi₂Te₅ Families

Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi₄Te₇ and Mn₂Bi₂Te₅ Families

Multi-level chiral edge states in Janus M₂XS₂Se₂ (M = V, Ti; X = W, Mo) monolayers with high Curie temperature and sizable nontrivial topological gaps

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Design of Antiferromagnetic Second-Order Band Topology with Rotation Topological Invariants in Two Dimensions

Cited by 2 publications

References 71 publications

Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi4Te7 and Mn2Bi2Te5 Families

Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi4Te7 and Mn2Bi2Te5 Families

Multi-level chiral edge states in Janus M2XS2Se2 (M = V, Ti; X = W, Mo) monolayers with high Curie temperature and sizable nontrivial topological gaps

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Product

Resources

About

Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi₄Te₇ and Mn₂Bi₂Te₅ Families

Topological Crystalline Insulator Phases in Magnetic van der Waals Crystal MnBi₄Te₇ and Mn₂Bi₂Te₅ Families

Multi-level chiral edge states in Janus M₂XS₂Se₂ (M = V, Ti; X = W, Mo) monolayers with high Curie temperature and sizable nontrivial topological gaps