Accession Number:

ADP013072

Title:

Dimensionality Transformation of Exciton State in Quantum Well With Asymmetrical Barriers

Descriptive Note:

Conference proceedings

Corporate Author:

RUSSIAN ACADEMY OF SCIENCES MOSCOW (RUSSIA) LEBEDEV INST

Report Date:

2000-06-23

Pagination or Media Count:

5.0

Abstract:

In the conditions of 2D-3D dimensionality transformation of one-particle states, the dependence of exciton binding energy Eex on asymmetrical well width h has been theoretically studied. It is shown that the contribution of one-particle continuous spectrum to exciton becomes considerable when the inverse exciton Bohr radius 1ab turns out to be comparable with the critical for 2D-3D transformation value of in-plane wave vector kc. The lack of coincidence between electron and hole kc values leads to the complicated shape of Eex h dependence which has a minimum at intermediate values of h. The minimum value of Eex appears to be less than 3D exciton binding energy.

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE