双势垒共振隧道结构中的散粒噪声研究

Proceedings of IEEE/Cornell Conference on Advanced Concepts in High Speed Semiconductor Devices and Circuits Pub Date : 1993-08-02 DOI:10.1109/CORNEL.1993.303086

M. M. Jahan, A. Anwar

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引用次数: 0

摘要

考虑量子阱内部空间电荷的累积，计算了双势垒共振隧道结构(DBRTS)中的散粒噪声。计算本质上是自洽的，是通过同时求解薛定谔方程和泊松方程得到的。计算结果表明，DBRTS的正微分电阻区(PDR)的散粒噪声得到抑制，负微分电阻区(NDR)的散粒噪声得到增强。这种行为可以用量子阱中存储的电荷引起的结构本态能量的波动来解释

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Study of shot noise in a double barrier resonant tunneling structure

Shot noise is calculated in a double barrier resonant tunneling structure (DBRTS) by taking the space charge accumulated inside the quantum well into account. The calculation is self-consistent in nature and is obtained by simultaneously solving the Schrodinger and Poisson's equations. The calculation manifests the suppression of shot noise in the positive differential resistance (PDR) region and an enhancement in the negative differential resistance region (NDR) of the DBRTS. The behavior is explained in terms of the fluctuation of the eigen energy of the structure due to the stored charge in the quantum well.<>

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Proceedings of IEEE/Cornell Conference on Advanced Concepts in High Speed Semiconductor Devices and Circuits

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