CAREER: Chemistry Perspectives to Design Novel Superconductors

摘要第一部分：非技术超导，虽然早在一个多世纪前就被发现，但仍然受到各种问题和挑战的困扰。超导体的电阻为零，当电流通过超导体时，它会强烈排斥磁场，因此可以应用于不损失能量的电网、利用无摩擦磁铁而不是轨道的超高速悬浮列车，以及量子计算设备。对设计和合成新型超导材料的创新方法提出了需求。该项目由材料研究部的固体和材料化学计划和已建立的竞争研究支持计划(EPSCoR)支持，将实验研究和理论评估相结合，揭示设计新超导材料的基本化学原理。这项研究的科学意义是为超导开辟了一种新的化学视角，重点关注特定元素的原子对在加速寻找新超导体方面的作用。拟议的外展活动和教育计划强调与固态材料相关的外展活动，包括开发双沟通密集型认证和服务学习认证的本科课程，以及针对路易斯安那州女性和代表性不足的少数族裔学生的充满活力的研究方案。这些活动将扩大国家的研究能力，并培养下一代材料科学家的培训。第2部分：技术总结本项目使用化学策略来探索两个新的关键电荷转移对(Pd-P和Pt-P)在超导中的作用。PI和她的团队使用固态材料发现和物理性质表征的方法，以选定的化合物家族为目标，以便能够探索这些特定元素对之间断裂或形成键的作用。与实验工作一起，电子结构和电子-声子耦合的理论确定为进一步的合成努力提供了反馈。这种方法提高了人们对一系列性质的认识：结构对电子和磁性结构的影响，电子-电子和电子-声子关联，磁性，自旋-轨道耦合效应，以及它们在超导体中的相互作用。该教育计划将侧重于在路易斯安那州发展和建立固态材料的服务学习教学法。这为大学生提供了在现实世界中学习和发展社区参与技能的经验机会，同时向K-12学校提供与超导和其他性质有关的外展演示。该项目由材料研究部内的固态和材料化学项目和已建立的支持竞争研究计划(EPSCoR)支持。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

AbstractPART 1: NON-TECHNICAL SUMMARYSuperconductivity, though first discovered more than a century ago, is still plagued by questions and challenges. Superconductors have zero electrical resistance and strongly repel magnetic fields when electricity flows through them and therefore have applications for uses such as grids that can transmit power without energy loss, ultra-fast levitating trains that ride frictionless magnets instead of rails, and quantum computing devices. There is a demand for innovative approaches to the design and synthesis of new superconducting materials. This project, supported by the Solid State and Materials Chemistry program within the Division of Materials Research and the Established Program to Support Competitive Research (EPSCoR), combines experimental investigation and theoretical assessment to reveal fundamental chemical principles to design new superconducting materials. The scientific significance of the research is to open a new chemical perspective towards superconductivity that focuses on the role of pairs of atoms of particular elements to accelerate the search for new superconductors. The proposed outreach activities and educational plan emphasize solid-state materials-related outreach activities including the development of dually communication-intensive certified and service-learning certified undergraduate courses and a vibrant research program for women and underrepresented minority students in the state of Louisiana. These activities will expand the research capability of the state and foster the training of next-generation materials scientists.PART 2: TECHNICAL SUMMARYThis project uses chemical strategies to probe the role of two new critical charge-transfer pairs of elements (Pd-P and Pt-P) in superconductivity. The PI and her group use methods for solid-state materials discovery and physical properties characterization, targeting families of compounds selected in order to be able to probe the role of breaking or forming bonds between these specific pairs of elements. Together with the experimental effort, theoretical determination of electronic structures and electron-phonon coupling provide feedback toward further synthetic efforts. This approach advances knowledge about a comprehensive set of properties: structural influences on electronic and magnetic structures, electron-electron and electron-phonon correlations, magnetism, spin-orbit coupling effects, and their interplay in superconductors. The educational plan will focus on developing and establishing service-learning pedagogies for solid-state materials in the state of Louisiana. This gives university students experiential opportunities to learn in real-world contexts and develop skills of community engagement while providing outreach demonstrations relating to superconductivity and other properties to K-12 schools. This project is supported by the Solid State and Materials Chemistry program within the Division of Materials Research and the Established Program to Support Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.