TUNNELING AND ENERGY TRANSFER IN ZNSE-BASED SEMIMAGNETIC DOUBLE QUANTUM WELLS
TUNNELING AND ENERGY TRANSFER IN ZNSE-BASED SEMIMAGNETIC DOUBLE QUANTUM WELLS
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基于 ZNSE 的半磁双量子阱中的隧道和能量传输
DOI：
10.1103/physrevb.58.1162
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发表时间：
1998
影响因子：
3.7
通讯作者：
F. Henneberger
中科院分区：
文献类型：
--
作者：
W. Heimbrodt;L. Gridneva;M. Happ;N. Hoffmann;M. Rabe;F. Henneberger
采用分子束外延技术制备了半磁性（Zn, Cd, Mn） Se阱和非磁性（Zn, Cd） Se阱，并通过ZnSe势垒弱耦合的非对称双量子阱结构。量子阱激子的水平交叉是通过外加磁场实现的。隧道的穿越伴随着隧道方向的反转。隧穿过程具有激子性质。除了非常有效的2- lo声子散射机制外，还发现了无辐射共振能量转移的迹象。
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.