2004/02/10 by Devis Bellucci, Massimo Rontani, Guido Goldoni +2 · 1 citation
Physics and Astronomy · #Condensed matter physics #Coulomb #Electron #Field (mathematics) #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Plane (geometry) #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Semiconductor Quantum Structures and Devices #Singlet state #Spin (aerodynamics) #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.physe.2003.12.050
published as Physica E 22, 482 (2004) · Proc. of EP2DS-15, Nara, Japan - 6 pages, 4 figures
openalex publication_date 2004/02/10 · arxiv created 2004/05/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate theoretically the spin-spin interaction of two-electrons in vertically coupled QDs as a function of the angle between magnetic field and growth axis. Our numerical approach is based on a real-space description of single-particle states in realistic samples and exact diagonalization of carrier-carrier Coulomb interaction. In particular, the effect of the in-plane field component on tunneling and, therefore, spin-spin interaction will be discussed; the singlet-triplet phase diagram as a function of the field strength and direction is drawn.