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arXiv 1002.5042cond-mat.mes-hall
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介观系统输运的波包方法

Wave packet approach to transport in mesoscopic systems

Tobias Kramer, Christoph Kreisbeck, Viktor Krueckl

摘要:

波包为研究分子物理中的含时效应提供了一个成熟的通用工具。在这里,我们展示了波包在低温下介观纳米器件的应用。在设备中的电子输运表示的散射和透射系数,这是有效地通过求解初始值问题(IVP),使用含时薛定谔方程。作为一个IVP的配方,使非平凡的设备拓扑结构可访问,并通过调整的波包参数,可以提取的散射性能的大范围的能量。

英文摘要:

Wave packets provide a well established and versatile tool for studying time-dependent effects in molecular physics. Here, we demonstrate the application of wave packets to mesoscopic nanodevices at low temperatures. The electronic transport in the devices is expressed in terms of scattering and transmission coefficients, which are efficiently obtained by solving an initial value problem (IVP) using the time-dependent Schroedinger equation. The formulation as an IVP makes non-trivial device topologies accessible and by tuning the wave packet parameters one can extract the scattering properties for a large range of energies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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