Excitonic fock-darwin spectra from electron-hole droplets in self-assembled quantum dots

S. Raymond*, S. Studenikin, A. Sachrajda, Z. Wasilewski, Shun-Jen Cheng, W. Sheng, P. Hawrylak, A. Babinski, M. Potemski, G. Ortner, M. Bayer

*此作品的通信作者

研究成果: Paper同行評審

1 引文 斯高帕斯(Scopus)

摘要

Charge-neutral droplets of electrons and holes in Quantum Dots (QDs) are probed optically. The application of strong magnetic fields creates a typical pattern of levels shifting and crossing, which closely resembles that of a single particle Fock-Darwin (F-D) spectrum. We show that the relevant particle in this context is an exciton whose behavior is dominated by the single particle character of both electron and hole due to the wavefunction symmetry in the QDs. However, precise quantitative analysis can be performed introducing many-body effects where direct Coulomb interaction, exchange energy and configuration coupling contribute to renormalization of the emission energies and alteration of the F-D spectra. Wavefunction symmetry plays a role in imposing quasi-degenerate transitions at specific magnetic fields whereby hybridization of states with opposing magnetic field dependence creates a cancellation of the level shifting for a limited range of magnetic fields.

原文English
頁面23-38
頁數16
出版狀態Published - 12月 2005
事件Nanoscale Devices, Materials, and Biological Systems: Fundamental and Applications - Proceedings of the International Symposium - Honolulu, HI, United States
持續時間: 3 10月 20048 10月 2004

Conference

ConferenceNanoscale Devices, Materials, and Biological Systems: Fundamental and Applications - Proceedings of the International Symposium
國家/地區United States
城市Honolulu, HI
期間3/10/048/10/04

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