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arXiv 1901.02183cond-mat.mes-hall
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半导体纳米尖的电子输运和发射理论

Theory of electron transport and emission from a semiconductor nanotip

Andrei Piryatinski, Chengkun Huang, Thomas J. T. Kwan

摘要:

一个有效的质量为基础的模型占导带量子化的高纵横比半导体纳米尖被开发来描述注入的电子输运和随后的电子发射从纳米尖。一个传输矩阵的形式主义是用来处理的尖端直径和电子发射的变化引起的电子散射。数值分析的散射和发射概率的金刚石参数化的纳米尖模型。我们的散射和发射模型进一步结合蒙特卡罗(MC)的方法来模拟电子输运通过nanotip。MC模拟,也占电子-声子散射和外部施加的电场,进行最小的纳米尖模型和等效宽度的金刚石板。的水平量子化,电子散射由于纳米尖端直径的变化,和电子-声子散射的纳米尖端的发射特性的影响被确定和散装板的情况下相比。

英文摘要:

An effective mass based model accounting for the conduction band quantization in a high aspect ratio semiconductor nanotip is developed to describe injected electron transport and subsequent electron emission from the nanotip. A transfer matrix formalism is used to treat electron scattering induced by the variation in the tip diameter and the electron emission. Numerical analysis of the scattering and emission probabilities is performed for the diamond parametrized nanotip model. Our scattering and emission models are further combined with a Monte Carlo (MC) approach to simulate electron transport through the nanotip. The MC simulations, also accounting for the electron-phonon scattering and externally applied electric field, are performed for a minimal nanotip model and an equivalent width diamond slab. An effect of the level quantization, electron scattering due to the nanotip diameter variation, and electron-phonon scattering on the nanotip emission properties is identified and compared with the case of bulk slab.

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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