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| DOI | 10.1126/science.aay5533 |
| Intrinsic quantized anomalous Hall effect in a moiré heterostructure | |
| Serlin M.; Tschirhart C.L.; Polshyn H.; Zhang Y.; Zhu J.; Watanabe K.; Taniguchi T.; Balents L.; Young A.F. | |
| 发表日期 | 2020 |
| ISSN | 0036-8075 |
| 起始页码 | 900 |
| 结束页码 | 903 |
| 卷号 | 367期号:6480 |
| 英文摘要 | The quantum anomalous Hall (QAH) effect combines topology and magnetism to produce precisely quantized Hall resistance at zero magnetic field. We report the observation of a QAH effect in twisted bilayer graphene aligned to hexagonal boron nitride. The effect is driven by intrinsic strong interactions, which polarize the electrons into a single spin- and valley-resolved moiré miniband with Chern number C = 1. In contrast to magnetically doped systems, the measured transport energy gap is larger than the Curie temperature for magnetic ordering, and quantization to within 0.1% of the von Klitzing constant persists to temperatures of several kelvin at zero magnetic field. Electrical currents as small as 1 nanoampere controllably switch the magnetic order between states of opposite polarization, forming an electrically rewritable magnetic memory. © 2020 American Association for the Advancement of Science. All rights reserved. |
| 关键词 | energymagnetic fieldphysicspolarizationquantum mechanicstemperature profiletopologyanisotropyArticlechemical analysischemical interactionchemical structureconductancehysteresismagnetic fieldmagnetismphenomenologyphysical parameterspolarizationpriority journalquantum anomalous Hall effectquantum chemistry |
| 语种 | 英语 |
| 来源机构 | Science |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133687 |
| 推荐引用方式 GB/T 7714 | Serlin M.,Tschirhart C.L.,Polshyn H.,et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure[J]. Science,2020,367(6480). |
| APA | Serlin M..,Tschirhart C.L..,Polshyn H..,Zhang Y..,Zhu J..,...&Young A.F..(2020).Intrinsic quantized anomalous Hall effect in a moiré heterostructure.,367(6480). |
| MLA | Serlin M.,et al."Intrinsic quantized anomalous Hall effect in a moiré heterostructure".367.6480(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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