Magnetotransport in Perovskite Films and Heterostructures

技术：最近的进展使得纳米级控制氧化物异质结构的沉积已经将钙钛矿带入了一场革命的边缘。这些材料的非凡功能为阐明新物理学提供了绝佳的机会，这是当前项目的目标。这项工作包括研究磁输运现象，如界面磁相分离，新型高迁移率金属中的电荷和自旋输运，以及氧化物界面上的高静电感应电荷密度。重点是了解铁磁氧化物/非铁磁氧化物界面的结构、化学、磁性和输运。这些研究将极大地加强目前对钙钛矿异质结构的了解，开辟氧化物电子学应用的新领域，并促进我们对复杂氧化物界面的基本理解。更广泛的影响包括与开发技术应用相关的社会效益、有效地向公众宣传以及对学生和博士后进行教育和培训。这些教育和外联活动围绕青年科学家开展研究工作，有效地将研究、教育和外联结合在一起。非技术性：氧气是我们日常生活中熟悉的一种元素。也许不太为人所知的是金属元素与氧反应生成固体氧化物所形成的化合物。这些氧化物是当前科学研究中最有用的材料之一，应用范围从简单的陶瓷到计算机处理器和硬盘驱动器等高科技设备。钙钛矿是氧化物的一种形式，已被证明是凝聚态物理的肥沃区域，产生了诸如高温超导和对磁场的巨大敏感性等突破。目前的项目旨在利用这些材料在精心设计的纳米结构中的非凡磁性和电学性质。这些人工结构产生了自然材料中不可能出现的物理现象，为新的电子应用提供了可能性，并促进了我们对磁性基本物理的理解。除了科学研究外，该项目还涉及对学生的教育和培训，以及与公众的接触。这些活动的中心是年轻研究人员的参与，他们完成了大部分工作，有效地将研究和教育整合到一个项目中。

Technical:The recent advances that enable nm-level control over the deposition of oxide heterostructures have brought the perovskites to the verge of a revolution. The extraordinary functionality of these materials provides outstanding opportunities for elucidation of new physics, the goal of the current project. The work involves the study of magnetotransport phenomena such as interfacial magnetic phase separation, charge and spin transport in novel high-mobility metals, and high electrostatically-induced charge densities at oxide interfaces. Emphasis is placed on understanding the structure, chemistry, magnetism, and transport at ferromagnetic oxide / non-ferromagnetic oxide interfaces. These studies will greatly enhance the current understanding of perovskite heterostructures, opening up new areas of application in oxide electronics, and advancing our basic understanding of complex oxide interfaces. The broader impacts include the societal benefits associated with development of technological applications, effective outreach to the public, and education and training of students and post-docs. These education and outreach activities revolve around the young scientists performing the research work, effectively integrating research, education, and outreach. Non-Technical:Oxygen is an element that is familiar to us in our daily lives. Perhaps less familiar are the chemical compounds formed by reacting metallic elements with oxygen to form solid oxides. These oxides are some of the most useful materials of current scientific interest, with applications from simple ceramics, to high-tech devices such as computer processors and hard disk drives. The perovskites are a form of oxides that have proven to be a fertile area for condensed matter physics, yielding such breakthroughs as superconductivity at high temperatures, and giant sensitivity to magnetic fields. The current project aims to exploit the remarkable magnetic and electronic properties of these materials in carefully designed nanoscale structures. These artificial structures produce physical phenomena that are not possible in naturally occurring materials, providing potential for new electronics applications, as well as advancing our understanding of the fundamental physics of magnetism. In addition to scientific research the project also involves education and training of students, as well as outreach to the public. These activities center on the involvement of the young researchers performing the bulk of the work, effectively integrating research and education in a single project.