Effect of the image potential on the Stark shift of exciton states in a quantum well.
Effect of the image potential on the Stark shift of exciton states in a quantum well.
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像势对量子阱中激子态斯塔克位移的影响。
DOI：
10.1103/physrevb.49.10432
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Wei
中科院分区：
文献类型：
--
作者：
Zhang;Li;Kong;Wei
本文用变分法计算了外电场作用下有限量子阱中激子基态束缚能时的象势及其影响。的影响的图像电位作为一个功能的阱宽，电场强度，和不同介质的介电常数的比例。结果表明，像势效应对激子结合能及其斯塔克位移有明显的修正作用。自像势和互像势对斯塔克位移有相反的影响。
We consider the image potential and its effect in calculating the binding energy of the ground bound state of an exciton in a finite quantum well subjected to an external electric field by means of the variational technique. The influence of the image potential is obtained as a function of the well width, the electric-field strength, and the ratio of the dielectric constants of different media. It is found that the image-potential effect will give significant corrections to the exciton binding energy and its Stark shift. The self-image potential and mutual-image potential have opposite effects on the Stark shift.