Spectral properties and magneto-optical excitations in semiconductor double rings under Rashba spin-orbit interaction

Wen Hsuan Kuan*, Chi Shung Tang, Cheng-Hung Chang

*此作品的通信作者

研究成果: Article同行評審

20 引文 斯高帕斯(Scopus)

摘要

We have numerically solved the Hamiltonian of an electron in a semiconductor double ring subjected to the magnetic flux and Rashba spin-orbit interaction. It is found that the Aharonov-Bohm energy spectrum reveals multizigzag periodic structures. The investigations of spin-dependent electron dynamics via Rabi oscillations in two-level and three-level systems demonstrate the possibility of manipulating quantum states. Our results show that the optimal control of photon-assisted inter-ring transitions can be achieved by employing cascade-type and Λ -type transition mechanisms. Under chirped pulse impulsions, a robust and complete transfer of an electron to the final state is shown to coincide with the estimation of the Landau-Zener formula.

原文English
文章編號155326
期刊Physical Review B - Condensed Matter and Materials Physics
75
發行號15
DOIs
出版狀態Published - 23 四月 2007

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