Resonance states of open quantum dots.
Resonance states of open quantum dots.
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开放量子点的共振态。
DOI：
10.1103/physrevb.53.16408
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Guo
中科院分区：
文献类型：
--
作者：
Wang;Zhu;Guo
我们计算了几个开放量子点系统的共振态谱。这些状态被识别使用电子停留时间。谱的统计与相应的封闭系统的统计完全相同，即使当能级宽度与平均间距相当时。特别地，对于规则结构，例如，开放的矩形量子点，共振态能级间距满足泊松分布。对于一个不规则的结构，例如，一个开放的西奈台球，我们发现，间距满足GOE或GUE统计取决于是否施加外部磁场。因此，在这种弹道输运状态下，共振传输的统计包含相应的本征量子能级分布的特征。
We have computed the spectra of resonance states for several open quantum dot systems. These states are identified using the electron dwell time. The statistics of the spectra are exactly the same as that of the corresponding closed system, even when the level widths are comparable with the average spacing. In particular, for a regular structure, eg, an open rectangular quantum dot, the resonance state level spacing satisfies the Poisson distribution. For an irregular structure, eg, an open Sinai billiard, we found that the spacings satisfy the GOE or GUE statistics depending on whether an external magnetic field is applied. Thus in this regime of ballistic transport, the statistics of resonance transmission contains characteristics of the corresponding intrinsic quantum level distribution.© 1996 The American Physical Society.