1998/04/30 by Richard Berkovits · 1 citation
Engineering · Mathematics · Physics and Astronomy · #Condensed matter physics #Coulomb #Coulomb blockade #Distribution (mathematics) #Electron #Magnetic confinement fusion research #Materials science #Mathematics #Nuclear physics #Physics #Plasma Diagnostics and Applications #Quantum mechanics #Vacuum and Plasma Arcs #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.81.2128
published as Phys. Rev. Lett. 81, 2128 (1998) · 13 pages, 3 figures, accepted for publication in PRL - a few small changes
arxiv created 1998/07/19 · openalex publication_date 1998/09/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using exact diagonalization numerical methods, as well as analytical arguments, we show that for typical electron densities in chaotic and disordered dots the peak spacing distribution is not bimodal but Gaussian. This is in agreement with experimental observations. We attribute this behavior to the tendency of an even number of electrons to gain on-site interaction energy by removing the spin degeneracy. We predict that the dot will show a nontrivial electron-number-dependent spin polarization. Experimental tests of this hypothesis based on the spin polarization measurements are proposed.