Electronic structure of hexagonal quantum-disc clusters
Wang Li-Min (王立民)ab, Luo Ying (罗莹)a, Ma Ben-Kun (马本堃)a, Liu Cheng-Shi (刘承师)a
a Department of Physics and Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China; b College of Physics, Hebei Normal University, Shijiazhuang 050016, China
Abstract Within the effective-mass approximation, we investigate the electronic structure of hexagonal quantum-disc clusters using the finite element method. With an increasing amount of quantum dots in the cluster, the electronic energy levels quickly expand into mini-bands, each consisting of discrete, unevenly distributed energy levels. The corresponding electronic eigenfunctions are linear combinations of the electron orbits in each quantum dot. The spatial symmetry of the combination is the same as the electronic eigenfunction of a single quantum dot.
Received: 19 April 2002
Revised: 09 December 2001
Accepted manuscript online:
Fund: Project supported by Scientific Research Foundation of College of Physics of Hebei Normal University.
Cite this article:
Wang Li-Min (王立民), Luo Ying (罗莹), Ma Ben-Kun (马本堃), Liu Cheng-Shi (刘承师) Electronic structure of hexagonal quantum-disc clusters 2002 Chinese Physics 11 812
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