https://doi.org/10.1007/s100510050328
Magic numbers in vertically coupled quantum dots
1
Department of Applied Physics, South China University of
Technology, Guangzhou 510641, P.R. China
2
Department of Physics and Material Science, City University of Hong Kong
Kowloon, Hong Kong
Corresponding author: a phwyruan@scut.edu.cn
Received:
13
July
1997
Accepted:
7
October
1997
Published online: 15 June 1998
A coupled quantum dot system has been studied by numerical diagonalization of the Hamiltonian. Discontinuous ground-state transitions induced by an external magnetic field have been predicted. Series of magic numbers of angular momentum which minimize the ground-state electron-electron interaction energy have been discovered. Theoretical explanations derived from the first principles have been formulated.
PACS: 73.20.Dx – Electron states in low-dimensional structures (superlattices, quantum well structures and multilayers) / 73.20.Mf – Collective excitations (including plasmons and other charge-density excitations) / 73.40.Kp – III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
