2005/05/17 by C. G. Bao, Gang Huang, G. M. Huang +1
Engineering · Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Terahertz technology and applications #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.72.195310
5 pages, 4 figures
arxiv created 2005/05/17 · openalex publication_date 2005/11/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The low-lying spectra of two-dimensional 3-electron and 4-electron narrow rings have been studied. It has been revealed that these spectra are simply dominated by a few favorable internal states. These internal states are free from the symmetry constraint and are nodeless in their wave functions (except the nodes when a pair of electrons overlap). The symmetry background of the fractional Aharonov-Bohm oscillation has been revealed. A very strong oscillation in the low-energy limit of the photon energy absorbed by the ground state against the magnetic field B is found. The amplitude of oscillation is a few mega-electron-volts and is about ten times larger than the one of ground-state energy; the period is the same as the Aharonov-Bohm oscillation. The qualitative features found in this paper hold also for N-electron rings.