Key Physics Issues of Compositionally-Tuned Correlated Materials

9802513张这项由罗格斯大学物理系教授张相宇提出的建议，描述了固体物理和材料科学的多方面研究计划。这项研究主要涉及表现出超导或巨磁电阻(GMR)的材料的行为。将研究四个具体主题：掺杂Mott绝缘体中电荷和自旋条纹关联的性质；与其GMR行为相关的、构成钙钛矿物理基础的微观机制的性质；钙钛矿的半金属性质；以及对具有拓扑受挫的磁性系统的性质的研究。这些课题目前处于当代固体物理研究的前沿，这项工作的结果将对所研究的各种材料的技术应用产生影响。这项研究将由PI与他自己的研究团队一起进行，并与其他配备了执行中子散射、微结构表征、结晶学和光电发射研究的人员合作进行。这份由罗格斯大学物理系教授Sang-Wook Cheong提出的建议描述了固体物理和材料科学的多方面研究计划。这项研究主要涉及表现出超导或巨磁电阻(GMR)的材料的行为。将研究四个具体主题：掺杂Mott绝缘体中电荷和自旋条纹关联的性质；与其GMR行为相关的、构成钙钛矿物理基础的微观机制的本质；钙钛矿的半金属性质；以及具有Topol逻辑挫折的磁系统的性质的研究。这些课题目前处于当代固体物理研究的前沿，这项工作的结果将对所研究的各种材料的技术应用产生影响。这项研究将由PI与他自己的研究团队一起进行，并与其他配备了执行中子散射、微结构表征、结晶学和光电发射研究的人员合作进行。***

9802513 Cheong This proposal by Professor Sang-Wook Cheong of the Department of Physics of Rutgers University describes a multifaceted research program in solid state physics and materials science. The research is largely concerned with the behavior of materials which exhibit superconductivity or giant magneto resistance (GMR). Four specific topics will be studied: the nature of the charge and spin stripe correlations in doped Mott insulators; the nature of the microscopic mechanisms that underlie the physics of Mn perovskites with respect to their GMR behavior; the half- metallic properties of the perovskites will be investigated; and a study will be initiated into the properties of magnetic systems with topological frustration. These topics are currently at the forefront of contemporary research in solid state physics and the results of the work will have implications in the technological application of the various materials studied. This research will be performed by the PI together with his own research team as well as in collaboration with others who are equipped for performing neutron scattering, microstructure characterization, crystallographic, and photoemission investigations. %%% This proposal by Professor Sang-Wook Cheong of the Department of Physics of Rutgers University describes a multifaceted research program in solid state physics and materials science. The research is largely concerned with the behavior of materials which exhibit superconductivity or giant magneto resistance (GMR). Four specific topics will be studied: the nature of the charge and spin stripe correlations in doped Mott insulators; the nature of the microscopic mechanisms that underlie the physics of Mn perovskites with respect to their GMR behavior; the half- metallic properties of the perovskites will be investigated; and a study will be initiated into the properties of magnetic systems with topol ogical frustration. These topics are currently at the forefront of contemporary research in solid state physics and the results of the work will have implications in the technological application of the various materials studied. This research will be performed by the PI together with his own research team as well as in collaboration with others who are equipped for performing neutron scattering, microstructure characterization, crystallographic, and photoemission investigations. ***