| Effects of Electric Field on the Valence—Bond Property of an Electron in a Quantum—Dot Molecule |
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| 作者姓名： | 王立民 罗莹 等 |
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| 作者单位： | DepartmentofPhysicsandInstituteofTheoreticalPhysics,BeijingNormalUniversity,Beijing100875 |
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| 摘 要： | ![]()
The electronic structure of the quantum-dot molecules in an electric field is investigated by the finite element method with the effective mass approximation.The numerical calculation results show that the valence bond of the quantum-dot molecule alternates between covalent bonds and ionic bonds as the electric field increases.The valence-bond property can be reflected by the oscillator strength of the intraband transition.The bound state with the highest energy level in the quantum-dot molecule gradually changes into a quasibound state when the electric field increases.
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| 关 键 词： | 半导体 量子斑点 电子价带性质 |
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