Four—Electron Systems in a Coupled Double—Layer Quantum Dots  被引量:1

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作  者:XIEWe-Fang 

机构地区:[1]DepartmentofPhysics,GuanzhouUniversity,Guangzhou510405,China

出  处:《Communications in Theoretical Physics》2003年第3期365-368,共4页理论物理通讯(英文版)

基  金:国家自然科学基金

摘  要:Making use of the method of few-body physics, the energy spectrum of a four-electron system consisting in a vertically coupled double-layer quantum dot as a function of the strength ofa magnetic field is investigated. Discontinuous ground-state transitions induced by an external magnetic field are shown. We find that, in the strong coupling case, the ground-state transitions depend not only on the external magnetic field B but also on the distance d between double-layer quantum dots. However, in the case of weak coupling, the ground-state transitions occur in the new sequence of the values of the magic angular momentum. Hence, the interlayer separation d and electron-electron interaction strongly affect the ground state of the coupled quantum dots.

关 键 词:半导体量子理论 双层量子斑点 四电子系统 

分 类 号:O471.1[理学—半导体物理]

 

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