2003/05/09 by R. Saniz, B. Barbiellini, A. B. Denison +2
Physics and Astronomy · #Condensed matter physics #Electron #Electron density #Fermi gas #Ground state #Hamiltonian (control theory) #Magnetic field #Magnetization #Momentum (technical analysis) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum dot #Quantum electrodynamics #Quantum mechanics #Semiconductor Quantum Structures and Devices #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.68.165326
5 pages (Revtex4), 4 (eps) figures
arxiv created 2003/05/09 · openalex publication_date 2003/10/20 · arxiv updated 2009/11/30 · openalex created_date 2018/03/29 · openalex updated_date 2026/08/05
We discuss an exactly solvable model Hamiltonian for describing the interacting electron gas in a quantum dot. Results for a spherical square-well confining potential are presented. The ground state is found to exhibit striking oscillations in spin polarization with dot radius at a fixed electron density. These oscillations are shown to induce characteristic signatures in the momentum density of the electron gas, providing a route for direct experimental observation of the dot magnetization via spectroscopies sensitive to the electron momentum density.