Skip to main content Accessibility help

Near-field photoluminescence spectroscopy of localized states in InGaAsN alloys

  • A. M. Mintairov (a1) (a2), P. A. Blagnov (a2), T. Kosel (a1), J. L. Merz (a1), V. M. Ustinov (a2), A. S. Vlasov (a1) and R. E. Cook. (a3)...


We used near-field magneto-photoluminescence scanning microscopy to study structural and optical properties of quantum-dot-like compositional fluctuations in GaAsN and InGaAsN alloys. We show that these fluctuations manifest themselves by the appearance of narrow emission lines (halfwidth 0.5−2 meV) at temperatures below 70K. We estimated the size, density, and nitrogen excess of individual compositional fluctuations (clusters), revealing phaseseparation effects in the distribution of nitrogen in GaAsN and InGaAsN. We found a dramatic difference in the Zeeman splitting of cluster lines between GaAsN and InGaAsN, indicating a strong effect of In on the exciton g-factor.



Hide All
1. Sakai, S., Ueta, Y. and Terauchi, Y., Jpn. J. Appl. Phys. 32, p. 4413 (1993).
2. Wei, S.-H. and Zunger, A., Phys. Rev. Lett. 76, 664 (1996).
3. Mintairov, A. M., Blagnov, P. A., Kosel, T., Merz, J. L., Ustinov, V. M., Vlasov, A. S., Cook, R. E., Phys. Rev. Lett. (in press).
4. Jones, E. D., Allerman, A. A., Kurz, S. R., Modine, N. A., Bajaj, K. K., Tozer, S. W. and Wei, X., Phys. Rev. B 62, 7144 (2000).
5. Varshni, Y. P., Physica 34, 149 (1967).
6. Bockelman, U., Heller, W. and Abstreiter, A., Phys. Rev. B 55, 4469 (1997).
7. Toda, Y., Shinomori, S., Suzuki, K. and Arakawa, Y., Appl. Phys. Lett. 73, 517 (1998).
8. Stepniewski, R., Potemski, M., Wysmolek, A., Pakula, K., Baranowski, J. M., Lusakowski, J., Grzegory, I., Porowski, S., Martinez, G. and Wyder, P., Phys. Rev. B 60, 4438 (1999).
9. Thoai, D. B. Tran, Hu, Y. Z. and S. W. Koch Phys. Rev. B 42, 11261, (1990).
10. Zunger, A. and Mahajan, S., in Handbook on semiconductors, v. 3, Elsevier Amsterdam, (1994).


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed