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Ultrafast spin tunneling and injection in coupled nanostructures of InGaAs quantum dots and quantum well
| Title: | Ultrafast spin tunneling and injection in coupled nanostructures of InGaAs quantum dots and quantum well |
| Authors: | Yang, Xiao-Jie Browse this author | | Kiba, Takayuki Browse this author →KAKEN DB | | Yamamura, Takafumi Browse this author | | Takayama, Junichi Browse this author | | Subagyo, Agus Browse this author | | Sueoka, Kazuhisa Browse this author →KAKEN DB | | Murayama, Akihiro Browse this author →KAKEN DB |
| Issue Date: | 6-Jan-2014 |
| Publisher: | American Institute of Physics |
| Journal Title: | Applied Physics Letters |
| Volume: | 104 |
| Issue: | 1 |
| Start Page: | 012406 |
| Publisher DOI: | 10.1063/1.4861387 |
| Abstract: | We investigate the electron-spin injection dynamics via tunneling from an In0.1Ga0.9As quantum well (QW) to In0.5Ga0.5As quantum dots (QDs) in coupled QW-QDs nanostructures. These coupled nanostructures demonstrate ultrafast (5 to 20 ps) spin injection into the QDs. The degree of spin polarization up to 45% is obtained in the QDs after the injection, essentially depending on the injection time. The spin injection and conservation are enhanced with thinner barriers due to the stronger electronic coupling between the QW and QDs. (C) 2014 AIP Publishing LLC. |
| Rights: | Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 104, 012406(2014) and may be found at http://scitation.aip.org/content/aip/journal/apl/104/1/10.1063/1.4861387 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/54771 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 村山 明宏
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