论文标题
强烈限制的2D抛物线量子点：Biexciton还是Quadron？
Strongly confined 2D parabolic quantum dot: Biexciton or Quadron?
论文作者
论文摘要
理论上，使用无限制的Hartree-fock方法研究了本地定位在单个INAS/GAAS抛物线量子点中的激素系统。激子，常规Biexcitons和Quadrons的结合能 - 在基态处的四个颗粒系统和两个孔的四个颗粒系统是磁场和限制电位的功能。已经发现，对于强限制，虽然Biexciton的结合能为负，但二极管的结合能为正，这表明抛物线量子点的强侧向限制支持Quadron而不是Biexciton的形成。
Excitonic systems localized in a single InAs/GaAs parabolic quantum dot are studied theoretically using an unrestricted Hartree-Fock method. The binding energies of excitons, conventional biexcitons and quadrons - four particles system of two electrons and two holes, in the ground state have been obtained as functions of magnetic field and confinement potential. It is found that for strong confinement, while the binding energy of biexciton is negative, the binding energy of quadron is positive, suggesting the strong lateral confinement of the parabolic quantum dot supports the formation of a quadron rather than a biexciton.
