在磁场中非极化束缚锂量子点的低态能谱

Low-lying Energy Spectra of Barrier Spin-unpolarized Li Quantum Dots in Magnetic Fields

使用少体物理方法,研究在任意磁场中非极化束缚锂量子点的低态能谱.带正电杂质束缚的二维3电子量子点被称为束缚锂量子点,其中正杂质位于z轴上且与束缚锂量子点所在平面(x-y平面)相距为d.研究表明,当电子自旋为非极化时,束缚锂量子点的低态能谱受磁场B和距离d的影响,其最低态角动量L随B和d的变化而跃迁,并从动力学方面进行了分析.

The methods for few-body physics are introduced to investigate the low-lying energy spectra of a barrier spin-unpolarized Li quantum dot （QD） under an arbitrary strength in a magnetic field. A two-dimensional three-electron QD bound by a positive impurity, which is located on the z-axis at a distance d from the QD plane （ the x-y plane）, is called a barrier Li QD. When electron spins were unpolarized, the dependence of the low-lying energy of the barrier Li QD on an external magnetic field B and the distance d was obtained. The angular momentum L of the lowest state is found to jump not only with the variation of B but also with that of d. Then these results were analyzed by using dynamics.