Transport Properties of Metallic Microstructures

本文研究了超小尺寸金属薄膜中的电子输运问题 结构. 这些结构中的一个或多个维度 的数量级为1000 >或更少。 将研究无序系统中的电子运动。 这些 结构也将被用作研究基础的工具。 物理现象。 将调查的主题包括 约化维数对磁性能的影响 杂质（近藤效应），非线性行为的存在下， 微波场，量子隧穿，磁化反转 在单个100 >粒子中，超导性在一个 维度 %%% 超小的金属结构构成了所有电流的基础 微电子器件 这些设备的小尺寸是 高性能和低成本的核心，因此， 开发更小的设备的持续愿望。 目的 这项研究是双重的。 第一，学习基本 尺寸小于100纳米的金属结构的性能。 虽然这比目前可用的要小得多 商业设备，在这个尺寸范围内的结构将是巨大的 在未来几代设备中的重要性。 重要的是要 了解这些结构的行为，特别是因为 它们可能会表现出新的特性， 更大的结构。 其次，这些结构将被用作工具， 在研究基本现象方面。 在许多情况下， 结构可用于探测不可访问的效果 更大的结构。 例子包括超导性在一个 尺寸，以及约束对磁性离子在 金属.

This research concerns electronic transport in ultra-small metallic structures. These are structures in which one or more dimensions are of order 1000 > or less. Fundamental questions concerning electron motion in disordered systems will be investigated. These structures will also be used as tools for the study of fundamental physical phenomena. Topics which will be investigated include the effects of reduced dimensionality on the behavior of magnetic impurities (Kondo effect), nonlinear behavior in the presence of microwave fields, magnetization reversal through quantum tunneling in individual 100 > particles, and superconductivity in one dimension. %%% Ultra-small metallic structures form the basis of all current microelectronic devices. The small size of these devices is central to their high performance and low cost, and thus there is a continuing desire to develop ever smaller devices. The purpose of this research is two-fold. First, to study the fundamental properties of metallic structures with sizes below 100 nanometers. While this is considerably smaller than currently available commercial devices, structures in this size range will be of great importance in future generations of devices. It is important to understand the behavior of these structures, particularly since they will likely exhibit new properties which are not found in larger structures. Second, these structures will be used as tools in the study of fundamental phenomena. In many cases these structures can be used to probe effects which are not accessible with larger structures. Examples include superconductivity in one dimension, and the effect of confinement on magnetic ions in metals.