Home > Publications database > Electron spin coherence near room temperature in magnetic quantum dots |
Journal Article | FZJ-2015-04514 |
; ; ; ; ; ;
2015
Nature Publishing Group
London
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Please use a persistent id in citations: http://hdl.handle.net/2128/8943 doi:10.1038/srep10855
Abstract: 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).
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