Optically detected magnetic resonance in CdSe/CdMnS nanoplatelets

被引：12
|
作者：
Tolmachev, Danil O. [1 ,2 ]
Ivanov, Vitalii Yu. [3 ]
Yakovlev, Dmitri R. [1 ,2 ]
Shornikova, Elena V. [1 ]
Witkowski, Bartlomiej [3 ]
Shendre, Sushant [4 ]
Isik, Furkan [5 ]
Delikani, Savas [4 ,5 ]
Demir, Hilmi Volkan [4 ,5 ]
Bayer, Manfred [1 ,2 ]
机构：
[1] Tech Univ Dortmund, Expt Phys 2, D-44227 Dortmund, Germany
[2] Russian Acad Sci, Ioffe Inst, St Petersburg 194021, Russia
[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[4] Nanyang Technol Univ, Sch Phys & Mat Sci, Sch Elect & Elect Engn, LUMINOUS Ctr Excellence Semicond Lighting & Displ, Singapore 639798, Singapore
[5] Bilkent Univ, UNAM Inst Mat Sci & Nanotechnol, Dept Phys, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey
来源：
NANOSCALE | 2020年 / 12卷 / 42期
基金：
新加坡国家研究基金会; 俄罗斯科学基金会;
关键词：
EXCHANGE INTERACTIONS; QUANTUM-WELLS; ELECTRON; SINGLE; MN2+; RECOMBINATION;
D O I：
10.1039/d0nr05633b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：21932 / 21939
页数：8
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