Chern Semimetal and the Quantized Anomalous Hall Effect in HgCr2Se4
文献类型：期刊论文
| 作者 | Xu, G ; Weng, HM ; Wang, ZJ ; Dai, X ; Fang, Z |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2011 |
| 卷号 | 107期号:18 |
| 关键词 | SEMICONDUCTOR HGCR2SE4 FERROMAGNETIC SPINELS MOMENTUM-SPACE MAGNETORESISTANCE CONDUCTANCE |
| ISSN号 | 0031-9007 |
| 通讯作者 | Fang, Z: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | In 3D momentum space, a topological phase boundary separating the Chern insulating layers from normal insulating layers may exist, where the gap must be closed, resulting in a "Chern semimetal" state with topologically unavoidable band crossings at the Fermi level. This state is a condensed-matter realization of Weyl fermions in (3 + 1)D, and should exhibit remarkable features, such as magnetic monopoles and Fermi arcs. Here we predict, based on first principles calculations, that such a novel quantum state can be realized in a known ferromagnetic compound HgCr2Se4, with a single pair of Weyl fermions separated in momentum space. The quantum Hall effect without an external magnetic field can be achieved in its quantum-well structure. |
| 收录类别 | SCI |
| 资助信息 | NSF of China; 973 program of China [2007CB925000, 2011CBA00108] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34724]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xu, G,Weng, HM,Wang, ZJ,et al. Chern Semimetal and the Quantized Anomalous Hall Effect in HgCr2Se4[J]. PHYSICAL REVIEW LETTERS,2011,107(18). |
| APA | Xu, G,Weng, HM,Wang, ZJ,Dai, X,&Fang, Z.(2011).Chern Semimetal and the Quantized Anomalous Hall Effect in HgCr2Se4.PHYSICAL REVIEW LETTERS,107(18). |
| MLA | Xu, G,et al."Chern Semimetal and the Quantized Anomalous Hall Effect in HgCr2Se4".PHYSICAL REVIEW LETTERS 107.18(2011). |
入库方式： OAI收割
来源：物理研究所
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