Three-dimensional calculation of electronic structures in semiconductor quantum ring based artificial molecules

Yi-Ming Li*

*Corresponding author for this work

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

We theoretically investigate the energy spectra of vertically coupled quantum rings (VCQRs) with a three-dimensional (3D) model under applied magnetic fields. Two interesting configurations, the disk- and the conical-shaped (DI and CO) small VCQRs are explored. The electron and hole energies are significantly dominated by the interdistance d which plays a crucial role in the tunable states of structures. For electrons, the energy state is with a nonperiodical transition among the lowest electron. For holes, it does also demonstrate the same behavior. The energy band gap of VCQRs oscillates non periodically between the lowest electron and holes states as a function of external magnetic fields. In addition, the oscillation is controlled by not only the topology of VCQR and the inner (and base) radius but also the variation of d. This investigation is constructive in studying the magneto-optical phenomena of the nanoscale semiconductor artificial molecules, in particular for the laser device applications.

原文English
主出版物標題2004 4th IEEE Conference on Nanotechnology
發行者Institute of Electrical and Electronics Engineers Inc.
頁面474-476
頁數3
ISBN(列印)0780385365
DOIs
出版狀態Published - 16 八月 2004
事件2004 4th IEEE Conference on Nanotechnology - Munich, Germany
持續時間: 16 八月 200419 八月 2004

出版系列

名字2004 4th IEEE Conference on Nanotechnology

Conference

Conference2004 4th IEEE Conference on Nanotechnology
國家Germany
城市Munich
期間16/08/0419/08/04

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