Fine structure of an exciton coupled to a single Fe2+ ion in a CdSe/ZnSe quantum dot

T. Smoleński; T. Kazimierczuk; M. Goryca; W. Pacuski; P. Kossacki

doi:10.1103/PhysRevB.96.155411

Fine structure of an exciton coupled to a single Fe2+ ion in a CdSe/ZnSe quantum dot

Mesoscale and Nanoscale Physics 2017-10-11 v1

Authors: T. Smoleński , T. Kazimierczuk , M. Goryca , W. Pacuski , P. Kossacki

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We present a polarization-resolved photoluminescence study of the exchange interaction effects in a prototype system consisting of an individual Fe2+ ion and a single neutral exciton confined in a CdSe/ZnSe quantum dot. Maximal possible number of eight fully linearly-polarized lines in the bright exciton emission spectrum is observed, evidencing complete degeneracy lifting in the investigated system. We discuss conditions required for such a scenario to take place: anisotropy of the electron-hole interaction and the zero-field splitting of the Fe2+ ion spin states. Neglecting of either of these components is shown to restore partial degeneracy of the transitions, making the excitonic spectrum similar to those previously reported for all other systems of quantum dots with single magnetic dopants.

Keywords

exciton fine structure Fe2+ ion CdSe/ZnSe quantum dot exchange interaction photoluminescence degeneracy lifting

Cite

@article{arxiv.1702.06094,
  title  = {Fine structure of an exciton coupled to a single Fe2+ ion in a CdSe/ZnSe quantum dot},
  author = {T. Smoleński and T. Kazimierczuk and M. Goryca and W. Pacuski and P. Kossacki},
  journal= {arXiv preprint arXiv:1702.06094},
  year   = {2017}
}

Comments

7 pages, 4 figures, 1 table

Fine structure of an exciton coupled to a single Fe2+ ion in a CdSe/ZnSe quantum dot

Abstract

Keywords

Cite

Comments

Related papers