Issue 40, 2015

Optical spectra of CdMnSe of nano-ferro- and antiferro-magnets

Abstract

We study optical transitions in CdSe quantum dots doped by Mn atoms. At low concentrations the transitions are spin-forbidden. Nevertheless, strong light absorption was experimentally found. To explain this effect we propose a new mechanism that includes two or more Mn atoms closely placed to each other containing the electrons with opposite spin projections. In this case the spin-flip is unnecessary. In addition we study absorption from quantum dots containing two Mn atoms with different multiplicities. We find that the strongest absorption from the gap is for an antiferromagnetic arrangement. The obtained results confirm the experimental concentration dependencies.

Graphical abstract: Optical spectra of CdMnSe of nano-ferro- and antiferro-magnets

Article information

Article type
Paper
Submitted
27 Apr 2015
Accepted
01 Sep 2015
First published
02 Sep 2015

Phys. Chem. Chem. Phys., 2015,17, 26828-26832

Author version available

Optical spectra of CdMnSe of nano-ferro- and antiferro-magnets

V. Proshchenko and Y. Dahnovsky, Phys. Chem. Chem. Phys., 2015, 17, 26828 DOI: 10.1039/C5CP02457A

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