Proceedings of nanoGe Fall Meeting 2018 (NFM18)
Publication date: 6th July 2018
The control of individual spins in semiconductor nanocrystals (NCs) is an emerging scientific field which undoubtedly plays an important role in the development of new spin-based technologies. Special attention has been given to semiconductor NCs embedded with magnetic impurities
—the diluted magnetic semiconductors (DMS). The incorporation of magnetic impurities into semiconductor nanocrystals with size confinement, promotes enhanced spin exchange interaction between photo-generated carriers and the guest spins. A renaissance in the DMS field during the past decade began with the incorporation of magnetic ions into colloidal quantum dots (QDs) but doping in wurtzite phase of one-dimensional (1D) nanocrystals is still not enough explored. Understanding the role of nanocrystal shape and crystalline anisotropy can have impact on tailoring the magnetism in DMS nanocrystals [1].
In this study we describe the synthesis and characterization of anisotropic 1D nanocrystals based on CdSe/CdS seeded nanorods (NRs) embedded with a diluted concentration of Mn2+ ions. Further, the magneto-optical properties were investigated by using optically detected magnetic resonance (ODMR) spectroscopy. The ODMR spectrum presents a change in luminescence intensity due to a magnetic resonance perturbation at the excited state. The experimental results showed a major band, with a split due to Mn interaction with the resident carriers.
This work was supported by the European Comission via the Marie-Sklodowska- Curie action Phonsi (H2020-MSCA-ITN-642656)
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