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The European Physical Journal B
ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)
Abstract Volume 3 Issue 3 (1998) pp 407-411
Magic numbers in vertically coupled quantum dots
W.-Y. Ruan (1) (a), H.-F. Cheung (2)
(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
Received: 13 July 1997 / Accepted: 7 October 1997
Abstract: 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
(a) email: phwyruan@scut.edu.cn
Article in PDF-Format (314 KB)
Online publication: July 14, 1998
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