Electron-vortex interaction in a quantum dotElectron-vortex interaction in a quantum dot
Faculty of Sciences. Physics
Condensed Matter Theory
International journal of modern physics: B: condensed matter physics, statistical physics, applied physics. - Singapore
16th International Conference on High Magnetic Fields in Semiconductor, Physics, AUG 02-06, 2004, Florida State Univ, NHMFL, Tallahassee, FL
18(2004):27-29, p. 3633-3636
University of Antwerp
Small numbers N < 5 of two-dimensional Coulomb-interacting electrons trapped in a parabolic potential placed in a perpendicular magnetic field are investigated. The reduced wave function of this system, which is obtained by fixing the positions of N-1 electrons, exhibits strong correlations between the electrons and the zeros. These zeros axe often called vortices. An exact-diagonalization scheme is used to obtain the wave functions and the results are compared with results obtained from the recently proposed rotating electron molecule (REM) theory. We find that the vortices gather around the fixed electrons and repel each other, which is to a much lesser extend so for the REM results.