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首页> 外文期刊>Physical review. B, Condensed Matter And Materials Physics >Simulation of electron transport through a quantum dot with soft walls
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Simulation of electron transport through a quantum dot with soft walls

机译：模拟电子通过具有软壁的量子点的传输

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摘要

We numerically investigate classical and quantum transport through a soft-wall cavity with mixed dynamics. Remarkable differences to hard-wall quantum dots are found which are, in part, related to the influence of the hierarchical structure of classical phase space on features of quantum scattering through the device. We find narrow isolated transmission resonances which display asymmetric Fano line shapes. The dependence of the resonance parameters on the lead mode numbers and on the properties of scattering eigenstates are analyzed. Their interpretation is aided by a remarkably close classical-quantum correspondence. We also searched for fractal conductance fluctuations. For the range of wave numbers k_F accessible by our simulation we can rule out their existence.
机译：我们数值研究经典和量子传输通过具有混合动力学的软壁腔。发现与硬壁量子点的显着差异，部分与经典相空间的分层结构对通过该装置的量子散射特征的影响有关。我们发现狭窄的孤立的传输共振表现出不对称的Fano线形。分析了共振参数对导模数和散射本征态性质的依赖性。对它们的解释借助于非常接近的经典量子对应关系而得以帮助。我们还搜索了分形电导波动。对于我们的模拟可访问的波数k_F的范围，我们可以排除它们的存在。

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