Prediction of the two-dimensional Janus ferrovalley material LaBrI
文献类型：期刊论文
| 作者 | Jiang, Peng1,2,3,4; Kang, Lili2; Li, Yan-Ling4; Zheng, Xiaohong2 ; Zeng, Zhi2; Sanvito, Stefano1,3
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021-07-26 |
| 卷号 | 104 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.104.035430 |
| 通讯作者 | Zheng, Xiaohong(xhzheng@theory.issp.ac.cn) |
| 英文摘要 | Two-dimensional (2D) ferrovalley materials, displaying coexistence of spontaneous spin and valley polarizations, have recently attracted significant attention due to their potential for applications in the fields of spintronics and valleytronics. However, unfortunately, to date only a few 2D ferrovalley materials exist. Here, first-principles calculations predict a 2D Janus ferrovalley material lanthanum bromiodide (LaBrI). It is found that LaBrI is a stable ferromagnetic electride, whose magnetic moment originates mainly from the interstitial anionic electrons. The magnetic transition temperature of LaBrI monolayers is estimated to be far beyond room temperature, and a sizable magnetic anisotropy with easy in-plane magnetization is also present. Most importantly, LaBrI monolayers exhibit a large valley polarization due to the concurrent broken space- and time-reversal symmetries, with the calculated valley polarization reaching up to 59 meV. This value is comparable to that of the ferrovalley materials reported to date. Intriguingly, the inequivalent Berry curvature at the two valleys takes opposite values, giving rise to an anomalous valley Hall effect, where a valley current with an accompanying net charge Hall current may be induced. |
| WOS关键词 | VALLEY POLARIZATION ; FERROMAGNETISM ; ENERGY ; MONOLAYERS ; DISCOVERY ; MOS2 |
| 资助项目 | National Natural Science Foundation of China[11974355] ; National Natural Science Foundation of China[12074153] ; Irish Research Council[IRCLA/2019/127] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000678807700011 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; Irish Research Council |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123127]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zheng, Xiaohong |
| 作者单位 | 1.Trinity Coll Dublin, CRANN Inst, Dublin 2, Ireland 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 3.Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland 4.Jiangsu Normal Univ, Sch Phys & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Peng,Kang, Lili,Li, Yan-Ling,et al. Prediction of the two-dimensional Janus ferrovalley material LaBrI[J]. PHYSICAL REVIEW B,2021,104. |
| APA | Jiang, Peng,Kang, Lili,Li, Yan-Ling,Zheng, Xiaohong,Zeng, Zhi,&Sanvito, Stefano.(2021).Prediction of the two-dimensional Janus ferrovalley material LaBrI.PHYSICAL REVIEW B,104. |
| MLA | Jiang, Peng,et al."Prediction of the two-dimensional Janus ferrovalley material LaBrI".PHYSICAL REVIEW B 104(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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