Tunneling and energy transfer in ZnSe-based semimagnetic double quantum wells

被引：22

作者：

Heimbrodt, W ^{[1
]}

Gridneva, L ^{[1
]}

Happ, M ^{[1
]}

Hoffmann, N ^{[1
]}

Rabe, M ^{[1
]}

Henneberger, F ^{[1
]}

机构：

[1] Humboldt Univ, Inst Phys, D-10115 Berlin, Germany

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.58.1162

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An asymmetric double-quantum-well structure has been fabricated by molecular-beam epitaxy, consisting of a semimagnetic (Zn,Cd,Mn)Se and a nonmagnetic (Zn,Cd)Se well, weakly coupled via a ZnSe barrier. Level crossing of the quantum well excitons is accomplished through an external magnetic field. The crossing is accompanied by reverse of the tunneling direction. The tunneling process is of excitonic nature. Besides the very efficient 2-LO-phonon scattering mechanism, indications for a radiationless resonance energy-transfer have been found. [S0163-1829(98)03823-5].

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页码：1162 / 1165

页数：4

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