论文标题
磷酸中的静电量子点限制
Electrostatic quantum dot confinement in phosphorene
论文作者
论文摘要
我们认为使用原子紧密结合方法在磷酸中通过静电电位定位的状态。根据受限状态的紧密结合计算的结果，我们为扶手椅和锯齿形方向的传导带电子提取有效质量。以这种方式得出的质量被用于简单的单带有效质量模型，正如我们发现的那样，在外部磁场中，概率密度和相互作用效应很好地重现了紧密结合的能量谱。两种方法都为电子对的地面与扶手椅方向分开的单电子岛的地面都产生了Wigner结晶，这已经用于小量子点。
We consider states localized by electrostatic potentials in phosphorene using an atomistic tight binding approach. From the results of the tight-binding calculations of the confined states we extract effective masses for the conduction band electrons in the armchair and zigzag directions. The masses derived in this way are used for a simple single-band effective mass model which, as we find, reproduces very well the tight-binding energy spectrum in external magnetic field, the probability densities and the interaction effects. Both methods produce Wigner crystallization for the ground-state of the electron pair with the single-electron islands separated in the armchair direction already for small quantum dots.
