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arXiv 1706.09488cond-mat.mes-hall
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短链GaAs /(Al,Ga)As超晶格中高频非线性振荡和本征混沌的参数依赖性

Parameter dependence of high-frequency nonlinear oscillations and intrinsic chaos in short GaAs/(Al,Ga)As superlattices

Jonathan Essen, Miguel Ruiz-Garcia, Ian Jenkins, Manuel Carretero, Luis Bonilla, Björn Birnir

摘要:

本文研究了短周期(5- 25周期)n掺杂Ga/(Al,Ga)As半导体超晶格在顺序共振隧穿机制下的设计参数空间。我们考虑在冷(77 K)和暖(295 K)温度下的SSL,模拟电子对(a)SSL周期数,(b)接触电导率和(c)无序强度(非周期性)变化的响应。我们的分析表明,混沌动力相存在于设计参数空间内的余维为零的子流形的数量。这一结果为在较短的固体激光器中观察高频内禀动力学混沌提供了一个令人鼓舞的指导。

英文摘要:

We explore the design parameter space of short (5--25 period), n-doped, Ga/(Al,Ga)As semiconductor superlattices (SSLs) in the sequential resonant tunneling regime. We consider SSLs at cool (77K) and warm (295K) temperatures, simulating the electronic response to variations in (a) the number of SSL periods, (b) the contact conductivity, and (c) the strength of disorder (aperiodicities). Our analysis shows that the chaotic dynamical phases exist on a number of sub-manifolds of codimension zero within the design parameter space. This result provides an encouraging guide towards the experimental observation of high-frequency intrinsic dynamical chaos in shorter SSLs.

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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