The study of the valence bond property in a two-different-quantum-dot molecule
Wang Li-Min (王立民)ab, Luo Ying (罗莹)a, Ma Ben-Kun (马本堃)a
a Department of Physics, Beijing Normal University, Beijing 100875, China; b Department of Physics, Hebei Normal University, Shijiazhuang 050091, China
Abstract The electronic energy spectrum and wavefunction of a quantum-dot molecule are studied by means of the finite-element solution of the single electron Schr?dinger equation. We find that the nature of the coupling can be covalent, ionic, or "intermediate" new mixed states, depending on various parameters such as the separation distance between two dots, the height of potential barrier, matching of the energies and parities of the orbital localized on each dot. The bond property can be used to explain the experimental result obtained by Oosterkamp et al. (1998 Nature395 873).
Received: 10 July 2001
Revised: 15 October 2001
Accepted manuscript online:
PACS:
73.21.La
(Quantum dots)
Fund: Project supported by the Doctoral Programme Foundation of the Education Ministry of China (Grant No. 96002703).
Cite this article:
Wang Li-Min (王立民), Luo Ying (罗莹), Ma Ben-Kun (马本堃) The study of the valence bond property in a two-different-quantum-dot molecule 2002 Chinese Physics 11 150
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
