Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >
Nuclear and excitonic spin polarization formed using cross-linearly polarized pulse pair via half-localized state in a single self-assembled quantum dot
Title: | Nuclear and excitonic spin polarization formed using cross-linearly polarized pulse pair via half-localized state in a single self-assembled quantum dot |
Authors: | Sasakura, H. Browse this author | Adachi, S. Browse this author | Muto, S. Browse this author | Hirose, S. Browse this author | Song, H. Z. Browse this author | Takatsu, M. Browse this author |
Issue Date: | 2008 |
Publisher: | American Institute of Physics |
Journal Title: | Journal of Applied Physics |
Volume: | 103 |
Issue: | 10 |
Start Page: | 103530-1 |
End Page: | 103530-5 |
Publisher DOI: | 10.1063/1.2927448 |
Abstract: | The oscillations of excitonic and nuclear spin polarizations in an optically pumped single self-assembled In0.8Al0.2As/Al0.35Ga0.65As quantum dot QD were clearly observed under the excitation of a wetting layer edge at B=5 T. This indicates that an exciton pair with opposite spins is alternatively created via the half-localized state only by changing the delay time between cross-linearly polarized pulse pair. Furthermore, periodic modulation of Zeeman energy synchronizes the degree of circular polarization of photoluminescence from a single QD, indicating that the Overhauser field follows the optically created electron spin polarization in half-localized states of a QD, and the half-localized state in a QD consists of a confined electron in a discrete state and hole in the continuum state. |
Type: | article |
URI: | http://hdl.handle.net/2115/49866 |
Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 笹倉 弘理
|