Electron decay from coupled quantum wells to a continuum: Observation of relaxation-induced slow down.
Electron decay from coupled quantum wells to a continuum: Observation of relaxation-induced slow down.
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从耦合量子阱到连续体的电子衰变：弛豫引起的减速的观察。
DOI：
10.1103/physrevb.47.16012
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Regreny
中科院分区：
文献类型：
--
作者：
Cohen;Gurvitz;Bar;Deveaud;Bergman;Regreny
利用时间分辨光谱学，我们研究了电子通过势垒从对称耦合量子阱到连续介质的衰变。我们发现衰减率与势垒厚度呈非单调关系。在薄势垒极限下，衰减率随着势垒厚度的减小而减小，电子能级间的能量分裂消失。我们发现，对于共振隧穿耦合到弛豫通道的系统来说，这种行为是普遍的。
Using time-resolved optical spectroscopy we study the decay of electrons from symmetric coupled quantum wells to a continuum through a potential barrier. We find a nonmonotonic dependence of the decay rate on the thickness of the barrier. At the limit of a thin barrier the decay rate decreases with decreasing barrier thickness and the energy splitting between the electron levels disappears. We show that this behavior is general for systems where resonant tunneling is coupled to a relaxation channel.