Atomic scale quantum anomalous hall effect in monolayer graphene/MnBiTe heterostructure
Materials Horizons, ISSN: 2051-6355, Vol: 11, Issue: 14, Page: 3420-3426
2024
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
The two-dimensional quantum anomalous Hall (QAH) effect is direct evidence of non-trivial Berry curvature topology in condensed matter physics. Searching for QAH in 2D materials, particularly with simplified fabrication methods, poses a significant challenge in future applications. Despite numerous theoretical works proposed for the QAH effect with C = 2 in graphene, neglecting magnetism sources such as proper substrate effects lacks experimental evidence. In this work, we propose the QAH effect in graphene/MnBiTe (MBT) heterostructure based on density-functional theory (DFT) calculations. The monolayer MBT introduces spin-orbital coupling, Zeeman exchange field, and Kekulé distortion as a substrate effect into graphene, resulting in QAH with C = 1 in the heterostructure. Our effective Hamiltonian further presents a rich phase diagram that has not been studied previously. Our work provides a new and practical way to explore the QAH effect in monolayer graphene and the magnetic topological phases by the flexibility of MBT family materials.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85192493821&origin=inward; http://dx.doi.org/10.1039/d4mh00165f; http://www.ncbi.nlm.nih.gov/pubmed/38691397; https://xlink.rsc.org/?DOI=D4MH00165F; https://dx.doi.org/10.1039/d4mh00165f; https://pubs.rsc.org/en/content/articlelanding/2024/mh/d4mh00165f
Royal Society of Chemistry (RSC)
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