Electronic, Magnetic, and Structural Properties of Low Dimensional and Multifunctional Materials

* 技术摘要 * 该提案解决了基本问题，其中低维度，各向异性和尺寸，结合相互作用的电子，磁性和晶格效应，导致材料的物理性质与材料研究高度相关。感兴趣的材料包括准一维有机隔离的阳离子-阴离子电荷转移导体，磁体和超导体在宏观到纳米尺度，和亚铁磁d-电子基化合物（如AB 2 O 4型尖晶石）与强烈相互作用的电荷，自旋，轨道和结构自由度。在这个基于实验的研究中使用的热力学变量包括低温，高磁场和高压，实验工具包括凝聚态物理学中的广泛方法。科学上，该项目扩展了对低维和受限几何环境中的序参数如何相互合作，共存或相互排斥的理解。在磁性和晶格效应强烈相互作用的材料中，低温和高磁场研究将为它们复杂的相互依赖性提供新的见解。在培训方面，强调解决问题。小组中的年轻研究人员接触到广泛的材料，方法，以及国内和国际合作者的大型社区。对于教育，该计划的主要方法是将实验室带入课堂，并通过课程，研讨会和推广计划向公众开放。* 该项目的科学目标将扩大对磁性和超导性等材料的重要性质如何“相互交谈”以及在极端温度，磁场和压力下的行为的理解。 在这种情况下，一种刺激可以使材料以不同的方式响应（例如热到电，磁到电或电到机械），这种效应可以导致具有潜在技术重要性的多功能材料的开发。低维和各向异性，其中材料的性质，如能量或电流的流动在不同方向上可能非常不同，是实现和控制功能的关键参数，有机和无机材料都将是研究的重点。在教育方面，解决问题是小组中年轻研究人员培训的主要目标，他们接触到广泛的材料，方法以及国内和国际合作者的大型社区。对于教育和推广，该计划的主要方法是将实验室带入课堂并向公众开放。PI和研究小组有一个外展文化作为他们的责任的一部分，并在实验室，大学，州和国家的干和多样性相关的计划参与的持续水平。

****Technical Abstract****This proposal addresses fundamental problems where low dimensionality, anisotropy and size, combined with interacting electronic, magnetic, and lattice effects, lead to the physical properties of materials highly relevant to materials research. Materials of interests include quasi-one-dimensional organic segregated cation-anion charge transfer conductors, magnets, and superconductors on macro to nano-sized scales, and ferrimagnetic d- electron based compounds (such as AB2O4-type spinels) with strongly interacting charge, spin, orbital, and structural degrees of freedom. The thermodynamic variables used in this experimentally-based investigation include low temperatures, high magnetic fields, and high pressures, and the experimental tools include a broad range of methods in condensed matter physics. Scientifically, this project expands the understanding of how the order parameters in low dimensional and restricted geometry environments interact cooperatively, coexist, or exclude each other. In materials where magnetic and lattice effects strongly interact, low temperature and high magnetic field studies will give new insight into their complex interdependence. In terms of training, problem solving is emphasized. Young researchers in the group are exposed to a broad range of materials, methods, and to a large community of collaborators, both domestic and international. For education, the program's main approach is to bring the lab into the classroom and to the public through curricula, workshops and outreach programs.****Non-Technical Abstract****The scientific goals of the project will expand the understanding of how important properties of materials such as magnetism and superconductivity "talk to each other" and behave under extremes of temperature, magnetic field and pressure. In such cases, one kind of stimulus can make a material respond in a different way (for instance thermal to electrical, magnetic to electrical or electrical to mechanical) and such effects can lead to the development of multifunctional materials of potential technological importance. Low dimensionality and anisotropy, where the properties of materials such as the flow of energy or current may be very different in different directions, are key parameters in the realization and control of function, and both organic and inorganic materials will be the focus of the investigations. In terms of education, problem solving is a main goal in the training of young researchers in the group, who are exposed to a broad range of materials, methods, and to a large community of collaborators, both domestic and international. For education and outreach, the program's main approach is to bring the lab into the classroom and to the public. The PI and the research group have a culture of outreach as part of their responsibility, and have a sustained level of involvement in STEM and diversity related programs in the laboratory, the university, the state, and nationally.