Quanum-dot-like composition fluctuations in near-field magneto-photoluminescence spectra of InGaAsN alloys

Alexander M. Mintairov; P. A, Blagnov; James L. Merz; Victor M. Ustinov; A. S. Vlasov; Alexey R. Kovsh; Jyh-Shyang Wang; Li-Chung Wei; Jim Y. Chi

doi:10.1117/12.511847

11 June 2003 Quantum-dot-like composition fluctuations in near-field magneto-photoluminescence spectra of InGaAsN alloys

Alexander M. Mintairov, P. A, Blagnov, James L. Merz, Victor M. Ustinov, A. S. Vlasov, Alexey R. Kovsh, Jyh-Shyang Wang, Li-Chung Wei, Jim Y. Chi

Author Affiliations +

Proceedings Volume 5023, 10th International Symposium on Nanostructures: Physics and Technology; (2003) https://doi.org/10.1117/12.511847
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

A series of narrow emission lines (halfwidth 0.5 - 2 meV) corresponding to quantum-dot-like compositional fluctuations have been observed in low temperature near-field photoluminescence spectra of GaAsN and InGaAsN alloys. The estimation of the size, density, and nitrogen excess of individual compositional fluctuations (clusters) using scanning near-field magneto-spectroscopy reveals phase-separation effects in the distribution of nitrogen. We found a strong effect of In on the exciton g-factor in InGaAsN alloys.

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Alexander M. Mintairov, P. A, Blagnov, James L. Merz, Victor M. Ustinov, A. S. Vlasov, Alexey R. Kovsh, Jyh-Shyang Wang, Li-Chung Wei, and Jim Y. Chi "Quantum-dot-like composition fluctuations in near-field magneto-photoluminescence spectra of InGaAsN alloys", Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); https://doi.org/10.1117/12.511847

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