Electron spin coherence near room temperature in magnetic quantum dots

Moro, F., Turyanska, L., Wilman, J. , Fielding, A. J., Fay, M. W., Granwehr, J. and Patane, A. (2015) Electron spin coherence near room temperature in magnetic quantum dots. Scientific Reports, 5 . ISSN 2045-2322

Full content URL: http://dx.doi.org/10.1038/srep10855

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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).

Keywords:Spin, Chemistry, JCOpen
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:22509
Deposited On:20 Mar 2016 18:18

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