CAREER: Magnetic Resonance - From Materials Research to Science Education

这个教师早期职业发展（Career）项目将专注于新型分子基材料的微波光谱。具体项目包括：准二维有机金属层间相干性的磁共振研究；节点超导体层间相相干的Josephson等离子体共振研究λ -(BETS)(2)Fe(1-x)Ga(x)Cl(4)场致超导态光谱以及单分子磁体交换耦合体系的电子顺磁共振研究。仪器开发将继续在PI的研究活动中发挥重要作用，将各种新型“磁共振”光谱技术扩展到亚毫米波范围。独特的高频仪器有望在本提案所述的研究范围之外具有重要用途，例如用于高分辨率高频EPR，在化学和生物学中的应用。该项目的教育部分旨在解决公众与他们对前沿材料研究的欣赏之间的脱节。活动包括：本科生、高中生和教师参与的研究体验和拓展活动；科学传播课程；跨学科研究生水平材料研究研讨会的发展；努力将材料研究的兴奋感融入大一的物理课程。近年来，随着所有有机磁体和超导体、合成电子材料和单分子纳米器件的发现，对分子基材料的研究取得了巨大进展。虽然在潜在的应用方面有巨大的希望，但这些材料的基本特性仍有待了解。这个教师早期职业发展（Career）项目旨在利用电子磁共振（EMR）光谱来探索这些新材料的许多特性。EMR使我们能够探测固体中电子的动力学，以及它们与它们存在的环境相互作用的性质。在此过程中，我们希望解决几个关键问题，如：为什么一些新发现的材料只在高磁场下显示超导性，而几乎所有其他已知超导体的超导性都被磁场破坏；当磁存储器被缩小到（纳米）尺寸，量子效应开始发挥作用时，会发生什么？这些问题的答案将在未来的技术方面影响社会。与这些调查同时，外展和指导将解决公众与他们对前沿材料研究的欣赏之间明显脱节的问题。努力将集中在各级学生以及高中教师身上。策略包括参与跨学科的研究项目，以及旨在发展有效的科学交流技能的课程。

This Faculty Early Career Development (CAREER) project will focus on microwave spectroscopies of novel molecule based materials. Specific projects include: magnetic resonance studies of interlayer coherence in quasi-two-dimensional organic metals; Josephson plasma resonance investigations of interlayer phase coherence in nodal superconductors; spectroscopy of the field-induced-superconducting state in lamda-(BETS)(2)Fe(1-x)Ga(x)Cl(4); and electron paramagnetic resonance investigations of exchange coupled systems of single molecule magnets. Instrument development will continue to play a major role in the growth of the PI's research activities, extending various novel "magnetic resonance" spectroscopic techniques well into the sub-millimeter-wave regime. Unique high-frequency instrumentation can be expected to have important uses beyond the scope of the investigations described in this proposal, e.g. for high-resolution high-frequency EPR, with applications in chemistry and biology. The educational component of the project is aimed at addressing the disconnection between the general public and their appreciation of forefront materials research. Activities include: research experiences and outreach activities involving undergraduates, high school students and teachers; courses in the communication of science; the development of an interdisciplinary graduate level materials research seminar; and efforts to convey the excitement of materials research into freshman physics courses.Research into molecule based materials has made enormous strides in recent years, with the discoveries of all organic magnets and superconductors, synthetic electronic materials, and single-molecule nano-devices. While there is huge promise in terms of potential applications, much remains to be learned about the fundamental characteristics of these materials. This Faculty Early Career Development (CAREER) project aims to explore many of these novel material characteristics using electron magnetic resonance (EMR) spectroscopy. EMR enables us to probe the dynamics of electrons in solids, as well as the nature of their interactions with the environment in which they exist. In doing so, we hope to address several key questions such as: why do some newly discovered materials display superconductivity only at high magnetic fields, while the superconductivity in almost all other known superconductors is destroyed by a magnetic field; and what happens to magnetic memories when they are reduced to the (nanometer) dimensions at which quantum effects begin to play a role? Answers to these questions will impact society in terms of future technologies. In parallel with these investigations, outreach and instruction will address the obvious disconnection between the general public and their appreciation of forefront materials research. Efforts will focus on students at all levels, as well as high school teachers. Strategies include participation in interdisciplinary research projects, and courses aimed at developing effective scientific communicative skills.