Origin of the decoherence of the extended ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
Origin of the decoherence of the extended electron spin state in Ti-doped β-Ga2O3
Auteur(s) :
Mentink-Vigier, F [Auteur]
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Binet, L [Auteur]
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Gourier, D [Auteur]
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) [LCMCP (site ENSCP)]
Vezin, Herve [Auteur]
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Binet, L [Auteur]
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Gourier, D [Auteur]
TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) [LCMCP (site ENSCP)]
Vezin, Herve [Auteur]

TGE Réseau National de RPE Interdisciplinaire [RENARD]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Titre de la revue :
Journal of Physics: Condensed Matter
Nom court de la revue :
J. Phys.: Condens. Matter
Numéro :
25
Pagination :
316002
Éditeur :
IOP Publishing
Date de publication :
2013-07-09
ISSN :
1361-648X
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
The mechanism of decoherence of the electron spin of Ti3+ in β-Ga2O3 was investigated by pulsed electron paramagnetic resonance. At 4.2 K, both instantaneous and spectral diffusion contribute to the decoherence. For electron ...
Lire la suite >The mechanism of decoherence of the electron spin of Ti3+ in β-Ga2O3 was investigated by pulsed electron paramagnetic resonance. At 4.2 K, both instantaneous and spectral diffusion contribute to the decoherence. For electron spin concentrations ≈1025 m−3 in the studied samples, calculations indicate that electron–electron couplings and electron couplings with 69Ga and 71Ga nuclei yield similar contributions to the spectral diffusion, but that electron–nuclei interactions could become the dominant cause of spectral diffusion for only slightly lower spin concentrations. Above 20 K, an additional contribution to the decoherence as well as to the spin–lattice relaxation arises from a two-optical-phonon Raman process, which becomes the leading decoherence mechanism for T > 39 K. Rabi oscillations with a damping time of about 79 ns at 4.2 K could also be observed. The damping of the Rabi oscillations, independent of the oscillation frequency, is suspected to arise from electron–nuclei interactions.Lire moins >
Lire la suite >The mechanism of decoherence of the electron spin of Ti3+ in β-Ga2O3 was investigated by pulsed electron paramagnetic resonance. At 4.2 K, both instantaneous and spectral diffusion contribute to the decoherence. For electron spin concentrations ≈1025 m−3 in the studied samples, calculations indicate that electron–electron couplings and electron couplings with 69Ga and 71Ga nuclei yield similar contributions to the spectral diffusion, but that electron–nuclei interactions could become the dominant cause of spectral diffusion for only slightly lower spin concentrations. Above 20 K, an additional contribution to the decoherence as well as to the spin–lattice relaxation arises from a two-optical-phonon Raman process, which becomes the leading decoherence mechanism for T > 39 K. Rabi oscillations with a damping time of about 79 ns at 4.2 K could also be observed. The damping of the Rabi oscillations, independent of the oscillation frequency, is suspected to arise from electron–nuclei interactions.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Date de dépôt :
2021-06-17T14:54:39Z
2021-09-13T11:00:50Z
2021-09-13T11:00:50Z