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Electron spin coherence near room temperature in magnetic quantum dots

Moro, Fabrizio; Patanè, Amalia

Authors

Fabrizio Moro

Amalia Patanè



Abstract

We report on an example of confined magnetic ions with long spin coherence near room temperature. This was achieved by confining single Mn 2+ spins in colloidal semiconductor quantum dots (QDs) and by dispersing the QDs in a proton-spin free matrix. The controlled suppression of Mn-Mn interactions and minimization of Mn-nuclear spin dipolar interactions result in unprecedentedly long phase memory (T M ∼8μs) and spin-lattice relaxation (T 1 ∼10ms) time constants for Mn 2+ ions at T=4.5K, and in electron spin coherence observable near room temperature (T M ∼1μs).

Journal Article Type Article
Publication Date Jun 4, 2015
Journal Scientific Reports
Print ISSN 2045-2322
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 5
Article Number 10855
APA6 Citation Moro, F., Turyanska, L., Wilman, J., Fielding, A. J., Fay, M. W., Granwehr, J., & Patanè, A. (2015). Electron spin coherence near room temperature in magnetic quantum dots. Scientific Reports, 5, https://doi.org/10.1038/srep10855
DOI https://doi.org/10.1038/srep10855
Publisher URL https://www.nature.com/articles/srep10855
Additional Information Received: 25 February 2015; Accepted: 7 May 2015; First Online: 4 June 2015; : The authors declare no competing financial interests.

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