NMR Investigation of Density Waves, Organic conductors, Superconductors, and Conducting Polymers

这个个人研究者奖支持一个项目，其主要目标是相关电子系统和导电聚合物的实验研究，主要使用核磁共振（NMR）。核磁共振是测量磁场的静态和动态性质以及密度波、单电子、带电子、局域电子矩或超导体中涡旋晶格的电荷配置的有力工具。将研究的主题包括：（1）电荷密度波系统Rb中序参量的性质（0.30）MoO（3）;（2）电子掺杂铜酸盐超导体Pr的特殊性质（1.85）Ce（0.15）CuO（4-y）;（3）有机导体λ-（BETS）（2）FeCl（4）的磁性和电子性质，其具有顺磁性金属相，反铁磁性绝缘相，和场致超导相;和（4）导电聚合物中的电子输运和动力学。这些调查将描述这些系统的不寻常的属性，有助于了解相互作用决定这些属性的方式，并提供可能用于其技术应用的基本信息。这项工作的重要组成部分是本科生，研究生和博士后研究人员的教育，以及用于这项工作的先进仪器和实验技术的开发，并提供给更广泛的科学界。这个个人研究者奖支持一个项目，其主要推力是材料的实验研究，其中许多电子之间的相互作用导致不寻常的物理特性。所使用的主要实验工具是核磁共振（NMR），这已被证明是非常有益的，在这种调查。要研究的系统包括高温超导体，具有非常不寻常特性的二维有机导体，包括由非常高的磁场打开的超导相，以及覆盖从几乎绝缘到金属行为的广泛导电性的导电聚合物。这些研究的价值在于，它们将表征这些系统的不寻常性质，有助于理解电子之间的相互作用决定这些性质的方式，并提供可能用于其技术应用的基本信息。这项工作的重要组成部分包括本科生，研究生和博士后研究人员的教育，以及用于这项工作的先进仪器和实验技术的开发，并提供给更广泛的科学界。

This individual investigator award supports a project whose main thrust is an experimental study of correlated electron systems and conducting polymers, mostly using nuclear magnetic resonance (NMR). NMR is a powerful tool to measure the static and dynamic properties of the magnetic field and charge configurations of a density wave, single electrons, band electrons, local electronic moments, or the vortex lattice in a superconductor. Topics to be studied include: (1) properties of the order parameters in the charge density wave system Rb(0.30)MoO(3); (2) unusual properties of the electron-doped cuprate superconductor Pr(1.85)Ce(0.15)CuO(4-y); (3) magnetic and electronic properties of the organic conductor lambda-(BETS)(2)FeCl(4), which has a paramagnetic metal phase, an antiferromagnetic insulating phase, and a field-induced superconducting phase; and (4) electron transport and dynamics in conducting polymers. These investigations will characterize the unusual properties of these systems, help to understand the way in which interactions determine these properties, and provide basic information that may be used in their technical applications. Important components of the work are the education of undergraduate students, graduate students, and postdoctoral researchers, and the development of advanced instrumentation and experimental techniques used for this work and made available to the broader scientific community. This individual investigator award supports a project whose primary thrust is an experimental study of materials in which interactions among many electrons lead to unusual physical properties. The main experimental tool to be used is nuclear magnetic resonance (NMR), which has proven to be very informative in such investigations. Systems to be studied include a high temperature superconductor, a two-dimensional organic conductor with very unusual properties, including a superconducting phase that is turned on by a very high magnetic field, and electrically conducting polymers that cover a wide range of conductivity from nearly insulating to metallic behavior. The value of these investigations is that they will characterize the unusual properties of these systems, help to understand the way in which interactions among electrons determine these properties, and provide basic information that may be used in their technical applications. Important components of the work include the education of undergraduate students, graduate students, and postdoctoral researchers, as well as the development of advanced instrumentation and experimental techniques used for this work and made available to the broader scientific community.