Optically detected magnetic resonance in CdSe/CdMnS nanoplatelets
Date
2020
Editor(s)
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Nanoscale
Print ISSN
2040-3364
Electronic ISSN
Publisher
Royal Society of Chemistry
Volume
12
Issue
42
Pages
21932 - 21939
Language
English
Type
Journal Title
Journal ISSN
Volume Title
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Abstract
Core/shell CdSe/(Cd,Mn)S colloidal nanoplatelets containing magnetic Mn2+ ions are investigated by the optically detected magnetic resonance technique, combining 60 GHz microwave excitation and photoluminescence detection. Resonant heating of the Mn spin system is observed. We identify two mechanisms of optical detection, via variation of either the photoluminescence polarization or its intensity in an external magnetic field. The spin–lattice relaxation dynamics of the Mn spin system is measured and used for evaluation of the Mn concentration. In CdSe/(Cd,Zn,Mn)S nanoplatelets the addition of Zn in the shells significantly broadens the magnetic resonance, evidencing local strain.