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Electron spin coherence near room temperature in magnetic quantum dots

Moro, F, Turyanska, L, Wilman, J, Fielding, AJ, Fay, MW, Granwehr, J and Patanè, A (2015) Electron spin coherence near room temperature in magnetic quantum dots. Scientific Reports, 5 (1). ISSN 2045-2322

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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 Mn2+ 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 (TM ~ 8 μs) and spin–lattice relaxation (T1 ~ 10 ms) time constants for Mn2+ ions at T = 4.5 K, and in electron spin coherence observable near room temperature (TM ~ 1 μs).

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Pharmacy & Biomolecular Sciences
Date Deposited: 28 Feb 2018 11:51
Last Modified: 28 Feb 2018 11:51
DOI or Identification number: 10.1038/srep10855
URI: http://researchonline.ljmu.ac.uk/id/eprint/8149

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