Electronic and Magnetic Properties of Two and Three Dimensional Alloys with Noncrystallographic Order

这项研究是关于电子 晶体学稳定的准晶体的性质。 最近 结果表明，这些二十面体晶体中的几种具有 不寻常的电子特性，可能与外来的 理论家预言的电子状态 本研究 旨在研究结构，原子势和 通过测量磁导率的维度效应， 热功率，霍尔效应，和几个选定的比热 二维和三维准晶的特征 及其无定形和结晶类似物。 的可能性 在所谓的金属中建立局域态 具有强原子势的准晶体将被检查。 这项研究将继续研究精细结构， 态密度，这是最近理论的核心 预测。 二维和三维准晶的磁相， 在新的铝玻璃中， 中子散射和磁场的局部化矩 测量. 实空间和超立方空间中的自旋结构 将对网格进行分析。

This research is concerned with the study of the electronic properties of thermodynamically stable quasicrystals. Recent results have shown several of these icosahedral crystals possess unusual electronic properties which may be related to exotic electronic states predicted by theorists. The present research aims to study the structural, atomic-potential and dimensionality effects by measuring the magneto-conductivity, thermopower, Hall effect, and specific heat of several selected and well characterized two- and three-dimensional quasicrystals and their amorphous and crystalline analogs. The possibliity of establishing localized states in the supposedly metallic quasicrystals with strong atomic potentials will be examined. The study will continue to investigate fine structure in the density-of-states, which is central to recent theoretical predictions. The magnetic phases of 2D and 3D quasicrystals and in the new aluminum glasses with both well defined magnetic sites and localized moments by neutron scattering and magnetic measurements. Spin structures in real-space and in hypercubic lattices will be analyzed.