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Exciton State and Its Binding Energy for a CoupledAsymmetric Double Quantum Well System(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2016年03期
Page:
46-
Research Field:
·物理学·
Publishing date:

Info

Title:
Exciton State and Its Binding Energy for a CoupledAsymmetric Double Quantum Well System
Author(s):
Yang Shuangbo
Jiangsu Key Laboratory for NSLSCS，School of Physics and Technology，Nanjing Normal University，Nanjing 210023，China
Keywords:
quantum well; binding energy of exciton; effective mass approximation; heavy/light hole
PACS:
O413.1
DOI:
10.3969/j.issn.1001-4616.2016.03.008
Abstract:
Within effective mass approximation，and by variational method we calculated the binding energies for the heavy hole exciton and light hole exciton for a coupled asymmetric double quantum well system，we studied how the binding energies change with the increase of the width of the right potential well；at a given exciton state，we calculated the expectation value of the distance in z direction and the distance in the plane perpendicular to z axis between electron and the hole（H/L）；we studied the behavior of the change of the distances as we increase the width of the right potential well；at a given exciton state，we calculated the probability distribution in space region for the electron and hole（H/L）pair appeared，we studied how the probability changes with increasing the width of the right potential well. The results are reasonable and very convincing.

References:

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Last Update: 2016-09-30