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首页> 外文期刊>Journal of physics, A. Mathematical and theoretical >The mesoscopic conductance of disordered rings, its random matrix theory and the generalized variable range hopping picture
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The mesoscopic conductance of disordered rings, its random matrix theory and the generalized variable range hopping picture

机译:无序环的介观电导,随机矩阵理论和广义变程跳变图

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摘要

The calculation of the conductance of disordered rings requires a theory that goes beyond the Kubo-Drude formulation. Assuming 'mesoscopic' circumstances the analysis of the electro-driven transitions shows similarities with a percolation problem in energy space. We argue that the texture and the sparsity of the perturbation matrix dictate the value of the conductance, and study its dependence on the disorder strength, ranging from the ballistic to the Anderson localization regime. An improved sparse random matrix model is introduced to capture the essential ingredients of the problem, and leads to a generalized variable range hopping picture.
机译:计算无序环的电导需要一个超越久保-德鲁德公式的理论。假设处于“介观”环境,对电驱动跃迁的分析显示出与能量空间中渗流问题的相似性。我们认为,扰动矩阵的质地和稀疏性决定了电导的值,并研究了其对无序强度的依赖性,从弹道到安德森定位体制。引入了一种改进的稀疏随机矩阵模型来捕获问题的基本要素,并生成了广义的可变范围跳频图。

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