Resonant tunneling of a Wannier exciton through a single-barrier heterostructure.
Resonant tunneling of a Wannier exciton through a single-barrier heterostructure.
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万尼尔激子通过单势垒异质结构的共振隧道效应。
DOI：
10.1103/physrevb.51.5453
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Kayanuma
中科院分区：
文献类型：
--
作者：
Saito;Kayanuma
通过将递归方法应用于一维模型中的格林函数，从理论上研究了万尼尔激子穿过异质势垒结构的量子隧道效应。预测当势垒宽度与激子相对运动的空间延伸相当或小于激子相对运动的空间延伸时，即使对于没有量子阱区域的单势垒隧道传输光谱也将具有尖锐的共振结构。这是由于与激子的准束缚态的共振，其中电子和空穴被具有空间分离配置的势垒捕获。
Quantum tunneling of a Wannier exciton through a heterobarrier structure is studied theoretically by applying the recursion method to the Green’s function in a one-dimensional model. It is predicted that, when the barrier width is comparable with or smaller than the spatial extension of the relative motion of the exciton, the transmission spectrum will have sharp resonance structures even for single-barrier tunneling without a quantum-well region. This is due to the resonance with the quasibound state of the exciton in which the electron and the hole are trapped by the barrier with a spatially separated configuration.