| 题名 | Terahertz emission from CoFeB/Cr/Pt trilayers: The role of Cr as both a spin current transporter and generator |
| 作者 | |
| 通讯作者 | Zhang，Xinhai |
| 发表日期 | 2021-06-07
|
| DOI | |
| 发表期刊 | |
| ISSN | 0003-6951
|
| 卷号 | 118期号:23 |
| 摘要 | Terahertz (THz) emission from CoFeB/Cr/Pt trilayers is investigated with emphases on the role of Cr as both a spin current transporter and generator. Compared with CoFeB/Pt bilayer emitters, THz emission from CoFeB/Cr/Pt exhibits large ellipticity, polarization-dependent magnetic response and temporal profile, and different decay length inside Cr. All these features can be explained by assuming that both the CoFeB layer and uncompensated spins in Cr near the CoFeB/Cr interface generate spin currents upon femtosecond laser excitation, which are subsequently converted to transient charge current via the inverse spin Hall effect in Pt, and thereby generating THz emission with different polarizations. Our results highlight the important role of antiferromagnet as a spin current generator when its magnetic order is weak near the Néel or blocking temperature. |
| 相关链接 | [Scopus记录] |
| 收录类别 | |
| 语种 | 英语
|
| 重要成果 | NI论文
|
| 学校署名 | 第一
; 通讯
|
| WOS记录号 | WOS:000691608300001
|
| EI入藏号 | 20212410505659
|
| EI主题词 | Chromium
; Cobalt compounds
; Femtosecond lasers
; Iron compounds
; Laser excitation
; Polarization
; Spin Hall effect
|
| EI分类号 | Chromium and Alloys:543.1
; Magnetism: Basic Concepts and Phenomena:701.2
; Laser Applications:744.9
|
| ESI学科分类 | PHYSICS
|
| Scopus记录号 | 2-s2.0-85107823512
|
| 来源库 | Scopus
|
| 引用统计 |
被引频次[WOS]：1
|
| 成果类型 | 期刊论文 |
| 条目标识符 | http://sustech.caswiz.com/handle/2SGJ60CL/242157 |
| 专题 | 工学院_电子与电气工程系 |
| 作者单位 | 1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,Xueyuan Rd. 1088,518055,China 2.Department of Electrical and Computer Engineering,National University of Singapore,Singapore,4 Engineering Drive 3,117583,Singapore 3.National University of Singapore (Chong Qing) Research Institute,Chongqing,Chongqing Liang Jiang New Area,401123,China |
| 第一作者单位 | 电子与电气工程系 |
| 通讯作者单位 | 电子与电气工程系 |
| 第一作者的第一单位 | 电子与电气工程系 |
| 推荐引用方式 GB/T 7714 |
Zhang，Qi,Chen，Zhuangzhuang,Shi，Huafeng,et al. Terahertz emission from CoFeB/Cr/Pt trilayers: The role of Cr as both a spin current transporter and generator[J]. APPLIED PHYSICS LETTERS,2021,118(23).
|
| APA |
Zhang，Qi.,Chen，Zhuangzhuang.,Shi，Huafeng.,Chen，Xin.,Talapatra，Abhishek.,...&Wu，Yihong.(2021).Terahertz emission from CoFeB/Cr/Pt trilayers: The role of Cr as both a spin current transporter and generator.APPLIED PHYSICS LETTERS,118(23).
|
| MLA |
Zhang，Qi,et al."Terahertz emission from CoFeB/Cr/Pt trilayers: The role of Cr as both a spin current transporter and generator".APPLIED PHYSICS LETTERS 118.23(2021).
|
| 条目包含的文件 | 条目无相关文件。 | |||||
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