2004/03/13 by W. H. Kuan, C. S. Tang, W. Xu
Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.1710726
published as Journal of Applied Physics 95, 6368 (2004). · 6 pages, 4 figures, accepted by J. Appl. Phys
arxiv created 2004/03/13 · openalex publication_date 2004/05/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a theoretical study of the energy levels in a parabolically confined quantum dot in the presence of the Rashba spin-orbit interaction (SOI). The features of some low-lying states in various strengths of the SOI are examined at zero and nonzero magnetic fields. It is shown that the spin-polarized electronic states can be more easily achieved in a weakly confined dot when SOI is greater than a critical value of the confinement strength. The presence of a magnetic field enhances the possibility of the spin polarization and the SOI leads to different energy dependence on magnetic fields applied. Furthermore, in high magnetic fields, the spectra of low-lying states show basic features of Fock–Darwin levels as well as Landau levels.