Localization and Critical Phenomena in Disordered Media

无序媒体中的定位和关键现象

• 批准号: 8711880
• 负责人: Michael Stephen
• 金额: $ 23.84万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711880&HistoricalAwards=false
• 关键词: Localization; Critical; Phenomena; Disordered; Media

The research described in this proposal is concerned with the localization of classical waves (mostly light) in random media. The observation of the light scattering from a random medium provides a convenient tool for investigating localization effects. The vector nature of light waves have an important effect on localization and lead to interesting observable effects. The effects of absorption, lower dimensionality, geometric effects and the analog of spin orbit scattering on coherent backscattering are being investigated. The existence of a mobility edge in the light problem is of interest. The intensity fluctuations and its correlation functions are under investigation and give interesting information about the scattering and interference of waves in random media. Another system being investigated is that of semiclassical (non- degenerate) electrons at low temperatures in two dimensions. The conductance and magnetoconductance of this system also shows interesting localization effects.

本提案中所述的研究涉及 经典波（主要是光）在随机介质中的局部化。 随机介质光散射的观测 为研究本地化提供了一个方便的工具 方面的影响. 光波的矢量性质对 影响定位并导致有趣观察结果 方面的影响. 吸收的效果，低维度， 几何效应和自旋轨道散射的模拟 正在研究相干反向散射。 的存在 光问题中的迁移率边缘是令人感兴趣的。 的 强度波动及其相关函数 调查，并提供有趣的信息， 波在随机介质中的散射和干涉。 另一 被调查的系统是半经典（非- 简并）电子在低温下在二维中。 的 该系统的电导和磁导也表明， 有趣的本地化效果。