DMREF: Multifunctional Interfacial Materials by Design

技术说明：复合氧化物是新发现的沃土，特别是由于它们广泛的电子，光学和磁性。复杂氧化物和相关材料之间的界面在不同的对称性和有序状态之间产生并置，并且已经清楚的是，这些界面本身就是新材料，并且导致与体材料显著不同的性质。该项目侧重于前沿理论和实验之间的迭代合作，确定控制氧化物界面新物理现象的基本原理，使用这些原理设计界面多阶之间的耦合以产生新功能，并通过实验合成和研究设计的界面材料用于新型电子器件。这些原子尺度的界面材料可以导致，例如，新类别的电场可控的电子和磁现象，并使开发利用这些耦合的新技术重要设备成为可能。利用预测理论和建模，以及从实验中反馈到理论，研究团队的目标是设计，理解和合成具有独特性质的新型氧化物异质界面。非技术描述：发现具有新性质的材料的新方法对于凝聚态科学和应用的持续科学进步至关重要。该项目解决了这一需求，重点关注“氧化物界面材料”，即在两种氧基材料之间的原子突变边界处及附近形成的材料，每种材料都可以表现出一系列令人惊叹的现象，例如磁性、压电行为、超导性和结构有序。在界面处，这些功能之间的相互作用引起未探索的纳米级行为。这些新的界面材料是实现新现象的最有前途的材料之一，这些新现象将挑战我们目前的理解，并将开发新的电子设备方向，以满足我们社会的技术需求。该项目为所有学生带来了广泛的教育经验，与五所大学的研究团队的教师互动，与国家实验室和国际机构的科学家合作，并参加外联活动。教师和研究生与来自美国和波多黎各的中学教师合作，根据他们的材料基因组学习/研究经验开发课堂材料。

Technical Description: Complex oxides have been fertile ground for new discoveries, due particularly to their wide-ranging electronic, optical, and magnetic properties. Interfaces between complex oxides and related materials create juxtapositions between different symmetries and ordered states, and it has become clear that these interfaces are new materials in their own right and lead to dramatically different properties from those in bulk. This project focuses on an iterative cooperation between forefront theory and experiment that determines the fundamental principles controlling new physical phenomena at oxide interfaces, uses these principles to design couplings between multiple orders at interfaces to generate new functionalities, and experimentally synthesizes and investigates designed interfacial materials for novel electronic devices. These atomic-scale interfacial materials can lead to, for example, new classes of electric-field controllable electronic and magnetic phenomena, and enable the development of new technologically important devices that exploit these couplings. Using a predictive theory and modeling, and feedback to theory from experiments, the research team aims to design, understand, and synthesize novel oxide hetero-interfaces that have unique properties not presently available.Non-technical Description: New approaches to the discovery of materials displaying novel properties are critical for the continued scientific progress in condensed matter science and applications. This project addresses this need with a focus on "oxide interfacial materials," those formed at and near the atomically abrupt boundary between two oxygen-based materials, each of which can exhibit a stunning array of phenomena such as magnetism, piezoelectric behavior, superconductivity, and structural ordering. At the interface, interactions between these functionalities give rise to unexplored nanoscale behaviors. These new interfacial materials are some of the most promising in which to realize new phenomena that will challenge our current understanding, and that will develop new electronic device directions to address our society's technology needs. The project brings a broad educational experience to all students, interacting with faculty members of this research team at five universities, working with scientists at National Laboratories and international institutions, and participating in outreach activities. The faculty and graduate students work with secondary school teachers from the US and Puerto Rico to develop classroom material based on their materials genome learning/research experience.