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Observation of enhanced luminescence emitted from InAs quantum dots with direct contact to superconducting niobium stripe
Title: | Observation of enhanced luminescence emitted from InAs quantum dots with direct contact to superconducting niobium stripe |
Authors: | Idutsu, Yasuhiro Browse this author | Takada, Makoto Browse this author | Hayashi, Yujiro Browse this author | Akazaki, Tatsushi Browse this author | Kumano, Hidekazu Browse this author →KAKEN DB | Suemune, Ikuo Browse this author →KAKEN DB |
Keywords: | 74.90.+n | 78.55.Cr | 78.67.Hc |
Issue Date: | Apr-2009 |
Publisher: | Wiley-Blackwell |
Journal Title: | Physica Status Solidi C Conferences |
Volume: | 6 |
Issue: | 4 |
Start Page: | 849 |
End Page: | 852 |
Publisher DOI: | 10.1002/pssc.200880669 |
Abstract: | Observation of drastically enhanced luminescence emitted from InAs quantum dots (QDs) which were in direct contact to superconducting Niobium (Nb) is reported. Although the PL intensity was essentially temperature independent without Nb stripe, drastic temperature dependence was observed with the presence of the Nb stripe. PL intensity was substantially increased below the Nb superconducting critical temperature (Tc). About 3-times enhancement was observed below Tc. This phenomenon is attributed to the Cooper pairs penetrated from the superconducting Nb stripe to adjacent InAs QDs by the proximity effect. This is the first experimental demonstration that the Cooper pairs enhance radiative recombination through QDs. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
Rights: | This is the pre-peer reviewed version of the following article: physica status solidi (c)Volume 6, Issue 4, pages 849–852, April 2009, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/pssc.200880669/abstract. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/45361 |
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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