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Spin-flip quenching in trion state mediated by optical phonons in a single quantum dot
Title: | Spin-flip quenching in trion state mediated by optical phonons in a single quantum dot |
Authors: | Kumano, H. Browse this author | Ekuni, S. Browse this author | Kobayashi, H. Browse this author | Sasakura, H. Browse this author | Suemune, I. Browse this author →KAKEN DB | Adachi, S. Browse this author | Muto, S. Browse this author |
Keywords: | 71.35.Pq | 72.25.Fe | 72.25.Rb | 78.67.Hc |
Issue Date: | Apr-2009 |
Publisher: | Wiley-Blackwell |
Journal Title: | Physica Status Solidi B Basic Research |
Volume: | 246 |
Issue: | 4 |
Start Page: | 775 |
End Page: | 778 |
Publisher DOI: | 10.1002/pssb.200880619 |
Abstract: | High degree of preservation of spin states mediated by optical phonons is demonstrated with a positive trion state in a single quantum dot. At the optical phonon resonance, suppression of spin relaxation is clearly identified as dip structures in photoluminescence excitation spectra under cross-circularly polarize detection with respect to a pumping. As a result, distinguishably high degree of circular polarization up to ∼0.85 is achieved in the absence of external magnetic field, which is not the case for neutral excitons with finite fine structure splitting. The absence of continuum states plays a crucial role for this observation. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
Rights: | This is the pre-peer reviewed version of the following article: physica status solidi (b)Volume 246, Issue 4, pages 775–778, April 2009, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/pssb.200880619/abstract. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/45359 |
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)
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Submitter: 末宗 幾夫
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