期刊
EPL
卷 101, 期 6, 页码 -出版社
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/101/67002
关键词
-
资金
- DGAPA-UNAM [IN113011, IN111311]
- CONACYT [79613, 82474]
- DGAPA UNAM [IN-117712-3]
We study, both experimentally and numerically, the Anderson localization phenomenon in torsional waves of a disordered elastic rod, which consists of a cylinder with randomly spaced notches. We find that the normal-mode wave amplitudes are exponentially localized as occurs in disordered solids. The localization length, measured using these wave amplitudes, decreases as a function of frequency. The normal-mode spectrum is also measured as well as computed, so its level statistics can be analyzed. From the spectrum, the nearest-neighbor spacing distribution can be obtained. This distribution can be described by a phenomenological expression that depends on a parameter a, related to the level repulsion, which is also a function of the frequency. Therefore, the localization length can be expressed in terms of the parameter a. There exists a range in which the localization length grows linearly with a. However, at low values of this parameter the linear dependence does not hold. Copyright (C) EPLA, 2013
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据