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).

Moro, F., Turyanska, L., Wilman, J., Fielding, A., Fay, M., Granwehr, J., et al. (2015). Electron spin coherence near room temperature in magnetic quantum dots. SCIENTIFIC REPORTS, 5 [10.1038/srep10855].

Electron spin coherence near room temperature in magnetic quantum dots

Moro, Fabrizio
;
2015

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).
Articolo in rivista - Articolo scientifico
Multidisciplinary
English
2015
5
10855
open
Moro, F., Turyanska, L., Wilman, J., Fielding, A., Fay, M., Granwehr, J., et al. (2015). Electron spin coherence near room temperature in magnetic quantum dots. SCIENTIFIC REPORTS, 5 [10.1038/srep10855].
File in questo prodotto:
File Dimensione Formato  
Moro_sr.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 1.96 MB
Formato Adobe PDF
1.96 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/210603
Citazioni
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 15
Social impact