Studies of Correlated Electron Effects in Anisotropic Metals and Superconductors

08/29/95 阿戈斯塔 该实验研究项目的重点是高度各向异性材料的相关电子特性，包括有机超导体和氧化钼青铜。 感兴趣的高度相关的电子性质包括自旋密度波，电荷密度波，量子霍尔效应和多序参量超导。实验利用高磁场，在一个独特的内部脉冲磁场设施，以及在NHMFL获得。这些研究还采用了高压和低温。高磁场部分地用于淬灭超导或其他相关电子状态，允许观察量子振荡和其他效应以探测费米表面。除了测量电子输运性质之外，还测量RF穿透深度。 从这个基础研究的结果可能包括新的基本物理效应，也可能提供洞察电子在其他系统，包括半导体微电子器件的行为。这个高度跨学科的项目涉及研究生谁在两个实验室的位置进行论文研究，并接受良好的培训，有利于未来的职业生涯在工业，政府或学术界。 %这个实验研究项目的重点是不寻常的 和潜在有用的电子传导材料，其在两个主要方面不同于普通金属如铜和银。首先，它们是由有机分子或金属氧化物组成的。第二，它们的导电性非常不同， 不同 方向 的各向异性 在这些材料中的某些材料中，电子传导倾向于偏向一个特定的方向，因此它们是“一维的”;在其它情况下，存在高传导性的平面，这是“二维”导体。 电子在这些条件下的行为往往是不寻常的，这种不寻常的行为及其原因是研究的主题。在这个项目中感兴趣的材料主要是有机超导体和氧化钼青铜。测量的特点是高磁场，在一个独特的内部脉冲磁场设施，以及在国家科学基金会支持的国家高磁场实验室（NHMFL）位于佛罗里达州立大学。 测量 还具有使用高压 和 低温 这项基础研究的结果可能包括基本的新的物理效应，也可能提供深入的见解 电子在其他系统中的行为，包括半导体 微电子 装置. 这 高度跨学科的项目涉及研究生谁追求的论文 在这两个实验室的位置进行研究，并接受良好的培训，有利于未来在工业，政府或学术界的职业生涯。 ***

08/29/95 2 9805784 Agosta This experimental research project focuses on the correlated electron properties of highly anisotropic materials, including organic superconductors and molybdenum oxide bronzes. Highly correlated electron properties of interest include spin density waves, charge density waves, the quantum Hall effect and multiple order parameter superconductivity. The experiments utilize high magnetic fields, obtained at a unique in-house pulsed magnetic field facility, as well as at NHMFL. The studies also feature use of high pressure and low temperature. High magnetic field is used in part to quench the superconducting or other correlated electron state, allowing observation of quantum oscillations and other effects to probe the Fermi surface. The RF penetration depth is measured in addition to electronic transport properties. The results from this basic investigation may include fundamental new physical effects and also may provide insight into electron behavior in other systems including semiconductor microelectronic devices.This highly interdisciplinary project involves graduate students who pursue thesis research at both laboratory locations, and receive excellent training beneficial to a future career in industry, government or academia. %%% This experimental research project focuses on unusual and potentially useful electronic conducting materials, which differ from common metals such as copper and silver in two major respects. First, the are composed of organic molecules, or oxides of metals. Second, they have very different electrical conduction in different directions. The anisotropy of the electron conduction in some of these materials tends to favor one particular direction, so they are "one-dimensional"; in other cases planes are present which are highly conductive, and this is a "two-dimensional" conductor. The behavior of electrons under these conditions is often unusual, and this unusual behavior and the reasons for it are the topic of the research. The materials of interest in this project are mostly organic superconductors and molybdenum oxide bronzes. Measurements feature high magnetic fields, obtained at a unique in-house pulsed magnetic field facility, as well as at the NSF-supported National High Magnetic Field Laboratory (NHMFL) located at Florida State University. Measurements also feature use of high pressure and low temperature. The results from this basic investigation may include fundamental new physical effects and also may provide insight into electron behavior in other systems including semiconductor microelectronic devices. This highly interdisciplinary project involves graduate students who pursue thesis research at both laboratory locations, and receive excellent training beneficial to a future career in industry, government or academia. ***