Optically detected magnetic resonance in CdSe/CdMnS nanoplatelets

Tolmachev D. O., Ivanov V. Y., Yakovlev D. R., Shornikova E. V., Witkowski B., Shendre S., ...Daha Fazla

NANOSCALE, cilt.12, sa.42, ss.21932-21939, 2020 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 12 Sayı: 42
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1039/d0nr05633b
  • Dergi Adı: NANOSCALE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, INSPEC, MEDLINE, Metadex
  • Sayfa Sayıları: ss.21932-21939
  • Ankara Üniversitesi Adresli: Hayır

Özet

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.