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journal article·2020-07-28Open access

Magneto-Optics of Excitons Interacting with Magnetic Ions in CdSe/CdMnS Colloidal Nanoplatelets

Elena V. Shornikova, Dmitri R. Yakovlev, Danil O. Tolmachev, Vitalii Yu. Ivanov, Ina V. Kalitukha, Victor F. Sapega, Dennis Kudlacik, Yuri G. Kusrayev, Aleksandr A. Golovatenko, Sushant Shendre, Savas Delikanli, Hilmi Volkan Demir, Manfred Bayer

ACS Nano· Volume 14· Issue 7
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Source abstract

Abstract

Excitons in diluted magnetic semiconductors represent excellent probes for studying the magnetic properties of these materials. Various magneto-optical effects, which depend sensitively on the exchange interaction of the excitons with the localized spins of the magnetic ions can be used for probing. Here, we study core/shell CdSe/(Cd,Mn)S colloidal nanoplatelets hosting diluted magnetic semiconductor layers. The inclusion of the magnetic Mn2+ ions is evidenced by three magneto-optical techniques using high magnetic fields up to 15 T: polarized photoluminescence, optically detected magnetic resonance, and spin-flip Raman scattering. We show that the holes in the excitons play the dominant role in exchange interaction with magnetic ions. We suggest and test an approach for evaluation of the Mn2+ concentration based on the spin–lattice relaxation dynamics of the Mn2+ spin system.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Quantum Dots Synthesis And Properties · Semiconductor Quantum Structures and Devices · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Experimentelle Physik 2, Technische Universität Dortmund, 44227 Dortmund, Germany

Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia

Institute of Physics, Polish Academy of Sciences, PL-02-668 Warsaw, Poland

LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, School of Physical and Materials Sciences, Nanyang Technological University, 639798 Singapore

Department of Electrical and Electronics Engineering, Department of Physics, UNAM − Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey

Funding

Russian Science Foundation · Narodowe Centrum Nauki · Deutsche Forschungsgemeinschaft · National Research Foundation Singapore · Russian Foundation for Basic Research · T??rkiye Bilimler Akademisi · Grants Council of the President of the Russian Federation

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