题名 | Negative magnetoresistance in Dirac semimetal Cd3As2 |
作者 | |
通讯作者 | Shen, Shun-Qing; Wang, Jiannong |
发表日期 | 2016-01
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DOI | |
发表期刊 | |
ISSN | 2041-1723
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卷号 | 7 |
摘要 | A large negative magnetoresistance (NMR) is anticipated in topological semimetals in parallel magnetic fields, demonstrating the chiral anomaly, a long-sought high-energy-physics effect, in solid-state systems. Recent experiments reveal that the Dirac semimetal Cd3As2 has the record-high mobility and positive linear magnetoresistance in perpendicular magnetic fields. However, the NMR has not yet been unveiled. Here we report the observation of NMR in Cd3As2 microribbons in parallel magnetic fields up to 66% at 50 K and visible at room temperatures. The NMR is sensitive to the angle between magnetic and electrical fields, robust against temperature and dependent on the carrier density. The large NMR results from low carrier densities in our Cd3As2 samples, ranging from 3.0 x 10(17) cm(-3) at 300 K to 2.2 x 10(16) cm(-3) below 50 K. We therefore attribute the observed NMR to the chiral anomaly. In perpendicular magnetic fields, a positive linear magnetoresistance up to 1,670% at 14 T and 2 K is also observed. |
相关链接 | [来源记录] |
收录类别 | |
语种 | 英语
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重要成果 | NI期刊
; NI论文
; ESI高被引
|
学校署名 | 其他
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资助项目 | Raith-HKUST Nanotechnology Laboratory at MCPF[SEG HKUST08]
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WOS研究方向 | Science & Technology - Other Topics
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WOS类目 | Multidisciplinary Sciences
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WOS记录号 | WOS:000369019100002
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出版者 | |
来源库 | Web of Science
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引用统计 |
被引频次[WOS]:375
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成果类型 | 期刊论文 |
条目标识符 | http://kc.sustech.edu.cn/handle/2SGJ60CL/29798 |
专题 | 理学院_物理系 |
作者单位 | 1.Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China 2.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China 3.Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China 4.Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 |
Li, Hui,He, Hongtao,Lu, Hai-Zhou,et al. Negative magnetoresistance in Dirac semimetal Cd3As2[J]. Nature Communications,2016,7.
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APA |
Li, Hui.,He, Hongtao.,Lu, Hai-Zhou.,Zhang, Huachen.,Liu, Hongchao.,...&Wang, Jiannong.(2016).Negative magnetoresistance in Dirac semimetal Cd3As2.Nature Communications,7.
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MLA |
Li, Hui,et al."Negative magnetoresistance in Dirac semimetal Cd3As2".Nature Communications 7(2016).
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条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | 操作 | |
ncomms10301.pdf(994KB) | -- | -- | 开放获取 | -- | 浏览 |
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