2008/01/11 by C. L. Romano, P. I. Tamborenea, S. E. Ulloa +1 · 5 citations
Engineering · Physics and Astronomy · #Atomic physics #Condensed matter physics #Electron #Exchange interaction #Excited state #Ferromagnetism #Magnetic field #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Rashba effect #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #Singlet state #Spin (aerodynamics) #Spintronics #Spin–orbit interaction #Wave function #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.physe.2009.04.039
published in Physica E Low-dimensional Systems and Nanostructures 41(8), 1577-1582 (Elsevier BV) · 5 pages, 6 figures
arxiv created 2008/01/11 · openalex publication_date 2009/05/14 · arxiv updated 2015/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate theoretically the combined effects of the electron-electron and the Rashba spin-orbit interactions on two electrons confined in quasi-one-dimensional AlInSb-based double quantum dots. We calculate the two-electron wave functions and explore the interplay between these two interactions on the energy levels and the spin of the states. The energy spectrum as a function of an applied magnetic field shows crossings and anticrossings between triplet and singlet states, associated with level mixing induced by the spin-orbit coupling. We find that the fields at which these crossings occur can be naturally controlled by the interdot barrier width, which controls the exchange integral in the structure.