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Spin-flip quenching in trion state mediated by optical phonons in a single quantum dot

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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)

Submitter: 末宗 幾夫

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