1999/08/04 by Min-Chul Cha, Shuo Yang, S. -R. Eric Yang · 1 citation
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.61.1720
4 pages, 3 figures
arxiv created 1999/08/04 · openalex publication_date 2000/01/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We have investigated whether many-body effects can induce significant level fluctuations in a disorder-free quantum dot. The closed energy shell structures and relaxation of the Hartree-Fock (HF) potentials are found to play a significant role. The level degeneracy consistent with the rotational symmetry of the confining potential determines the structure of the energy shells. A closed shell state of a dot can give rise to large fluctuations. When a strong magnetic field is present the shell structure is absent and fluctuations are significantly reduced.