EXCITON ENERGIES AS A FUNCTION OF ELECTRIC-FIELD - CONFINED QUANTUM STARK-EFFECT

被引：31

作者：

FENG, YP ^{[1
]}

SPECTOR, HN ^{[1
]}

机构：

[1] IIT, DEPT PHYS, CHICAGO, IL 60616 USA

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.48.1963

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed a variational calculation of the exciton binding energy as a function of electric field in a semiconducting quantum-well structure using a three-dimensional (3D) hydrogenic trial wave function and compared our results with earlier calculations in which a 21) hydrogenic trial wave function was used. Our results yield larger exciton binding energies for wide wells and strong electric fields. We find that the crossover between 2D and 3D behavior occurs at a critical well width which is of the order of the exciton Bohr radius in zero field and which decreases with increasing electric field.

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页码：1963 / 1966

页数：4

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