Measuring spin diffusion of electrons in bulk n-gaas using circularly dichromatic absorption difference spectroscopy of spin gratings
文献类型：期刊论文
| 作者 | Yu, Hua-Liang2; Zhang, Xiu-Min2; Wang, Peng-Fei1; Ni, Hai-Qiao1; Niu, Zhi-Chuan1; Lai, Tianshu2 |
| 刊名 | Applied physics letters
 |
| 出版日期 | 2009-05-18 |
| 卷号 | 94期号:20页码:3 |
| 关键词 | Circular dichroism Diffraction gratings Diffusion Gallium arsenide Homodyne detection Iii-v semiconductors Spin dynamics Spin polarised transport |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.3141483 |
| 通讯作者 | Niu, zhi-chuan(zcniu@red.semi.ac.cn) |
| 英文摘要 | Circular dichromatic absorption difference spectroscopy is developed to measure the spin diffusion dynamics of electrons in bulk n-gaas. this spectroscopy has higher detection sensitivity over homodyne detection of spin-grating-diffracted signal. a model to describe circular dichromatic absorption difference signal is derived and used to fit experimental signal to retrieve decaying rate of spin gratings. a spin diffusion constant of d(s)=201 +/- 25 cm(2)/s for bulk n-gaas has been measured at room temperature using this technique and is close to electron diffusion constant (d(c)), which is much different from the case in gaas quantum wells where d(s) is markedly less than d(c). |
| WOS关键词 | QUANTUM-WELLS ; OPTICAL NONLINEARITIES ; RELAXATION ; SEMICONDUCTORS ; DRAG |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000266342800034 |
| 出版者 | AMER INST PHYSICS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427620 |
| 专题 | 半导体研究所 |
| 通讯作者 | Niu, Zhi-Chuan |
| 作者单位 | 1.Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 2.Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Hua-Liang,Zhang, Xiu-Min,Wang, Peng-Fei,et al. Measuring spin diffusion of electrons in bulk n-gaas using circularly dichromatic absorption difference spectroscopy of spin gratings[J]. Applied physics letters,2009,94(20):3. |
| APA | Yu, Hua-Liang,Zhang, Xiu-Min,Wang, Peng-Fei,Ni, Hai-Qiao,Niu, Zhi-Chuan,&Lai, Tianshu.(2009).Measuring spin diffusion of electrons in bulk n-gaas using circularly dichromatic absorption difference spectroscopy of spin gratings.Applied physics letters,94(20),3. |
| MLA | Yu, Hua-Liang,et al."Measuring spin diffusion of electrons in bulk n-gaas using circularly dichromatic absorption difference spectroscopy of spin gratings".Applied physics letters 94.20(2009):3. |
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来源：半导体研究所
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