Phonon universal-transmission fluctuations and localization in semiconductor superlattices with a controlled degree of order.
Phonon universal-transmission fluctuations and localization in semiconductor superlattices with a controlled degree of order.
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具有受控有序度的半导体超晶格中的声子普遍传输涨落和局域化。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
F. Nori
中科院分区：
文献类型：
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作者：
N. Nishiguchi;S. Tamura;F. Nori
我们研究分析和数值声子传输波动和局域化的部分有序超晶格与相邻层之间的相关性。为了生成一系列的层与不同程度的秩序，我们采用了亨德里克斯和泰勒提出的模型，以及部分有序版本的确定性非周期性超晶格。通过改变相邻层间相关性的参数，Hendricks-Teller超晶格表现出从交替层的周期有序到相分离的相反极限的转变，包括许多中间排列和完全随机的情况
We study both analytically and numerically phonon transmission fluctuations and localisation in partially ordered superlattices with correlations among neighboring layers. In order to generate a sequence of layers with a varying degree of order we employ a model proposed by Hendricks and Teller as well as partially ordered versions of deterministic aperiodic superlattices. By changing a parameter measuring the correlation among adjacent layers, the Hendricks-Teller superlattice exhibits a transition from periodic ordering, with alternating layers, to the phase-separated opposite limit, including many intermediate arrangements and the completely random case