Electron spin coherence near room temperature in magnetic quantum dots.
Sci Rep
; 5: 10855, 2015 Jun 04.
Article
em En
| MEDLINE
| ID: mdl-26040432
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 (TM ~ 8 µs) and spin-lattice relaxation (T1 ~ 10 ms) time constants for Mn(2+) ions at T = 4.5 K, and in electron spin coherence observable near room temperature (TM ~ 1 µs).
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2015
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Article