Year: 2020
Type: article
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.
Source: Nanoscale
DOI: 10.1039/d0nr05633b
Institutions: Russian Academy of Sciences, TU Dortmund University, Ioffe Institute, Institute of Physics, Polish Academy of Sciences, Nanyang Technological University, LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, Bilkent University, National Nanotechnology Research Center, Universidad Nacional Autónoma de México
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W3096799364