Ligand Field Exciton Annihilation in Bulk CrCl3

Samanvitha Sridhar; Ario Khansari; Shaun O'Donnell; Alexandra T. Barth; Evgeny O. Danilov; Felix N. Castellano; Paul A. Maggard; Daniel B. Dougherty

Ligand Field Exciton Annihilation in Bulk CrCl3

Materials Science 2024-05-27 v1 Strongly Correlated Electrons

Authors: Samanvitha Sridhar , Ario Khansari , Shaun O'Donnell , Alexandra T. Barth , Evgeny O. Danilov , Felix N. Castellano , Paul A. Maggard , Daniel B. Dougherty

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Abstract

The layered van der Waals material CrCl3 exhibits very strongly bound ligand field excitons that control optoelectronic applications and are connected with magnetic ordering by virtue of their d-orbital origin. Time-resolved photoluminescence of these exciton populations at room temperature shows that their relaxation is dominated by exciton-exciton annihilation and that the spontaneous decay lifetime is very long. These observations allow the rough quantification of the exciton annihilation rate constant and contextualization in light of a recent theory of universal scaling behavior of the annihilation process.

Keywords

CrCl3 ligand field exciton exciton-exciton annihilation magnetic ordering scaling behavior

Cite

@article{arxiv.2405.15528,
  title  = {Ligand Field Exciton Annihilation in Bulk CrCl3},
  author = {Samanvitha Sridhar and Ario Khansari and Shaun O'Donnell and Alexandra T. Barth and Evgeny O. Danilov and Felix N. Castellano and Paul A. Maggard and Daniel B. Dougherty},
  journal= {arXiv preprint arXiv:2405.15528},
  year   = {2024}
}

Ligand Field Exciton Annihilation in Bulk CrCl3

Abstract

Keywords

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