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arXiv cond-mat/9810360cond-mat.mes-hall
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具有改进特性的非对称双势垒共振隧穿结构

Asymmetric double barrier resonant tunneling structures with improved characteristics

Jun-jie Shi, Barry C. Sanders, Shao-hua Pan

摘要:

我们提出了一个自洽的计算,基于全局相干隧道模型,并表明,结构的不对称性的双势垒共振隧穿结构显着修改的电流-电压特性相比,对称结构。特别地,适当设计的非对称结构可以产生比其常用的对称对应物大得多的峰值电流和负微分电导率的绝对值。

英文摘要:

We present a self-consistent calculation, based on the global coherent tunnelling model, and show that structural asymmetry of double barrier resonant tunnelling structures significantly modifies the current-voltage characteristics compared to the symmetric structures. In particular, a suitably designed asymmetric structure can produce much larger peak current and absolute value of the negative differential conductivity than its commonly used symmetric counterpart.

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