Quantum criticality and frustrated spin systems

许多现代技术，如计算机硬盘驱动器和通用串行总线（USB）闪存驱动器，都是基于凝聚态物理和材料科学的知识，以及新材料及其特性的发现。具有有趣的新特性的新材料的发现可能会使设备更具成本效益和可靠性。材料合成为凝聚态物理的所有其他研究奠定了基础，材料是能源部门、医疗设备、传感、通信和信息技术等技术的关键。下一代设备的发展需要不断探索新材料的设计原则，多功能系统，拥有所需的电和磁性能。发现新的量子行为往往是冒险进入未知领域的结果，即合成一种新材料。我关于新材料生长和表征的研究项目有可能对这一领域的进展产生重大影响。拟议的研究计划探索具有潜在有益特性的新量子材料。主要的重点是发现，合成，表征和理解新型量子材料。为了找到金属中的量子自旋液态，磁性材料中的非平凡拓扑态，以及其他理想的量子态，该研究针对特定类型的化合物，其中磁性过渡金属和稀土离子占据受挫的晶格几何形状。我的研究将在这些问题上取得重要进展，重点关注一组特别干净的模型材料，其中“量子临界性和金属中受挫的磁性”可以被利用，以一种可控的方式调整动能和势能之间的平衡。这有可能揭示有用和有趣的新电子态，并将使我们能够仔细测试和扩展我们对强相互作用电子系统的理解。拟议的项目将利用我们的成就和合作，并继续在这一领域设定新的方向。与此同时，我的研究项目将为高素质人才提供良好的培训环境，他们将成为这一领域未来的领导者。

Much of modern technology, such as computer hard drives and Universal Serial Bus (USB) flash drives, is based on knowledge of condensed matter physics and materials science and the discovery of new materials and their properties. The discovery of new materials with interesting new properties may allow for more cost-effective and reliable devices. Materials synthesis lays the foundation for all other research in condensed matter physics, and materials are the linchpin for technologies ranging from the energy sector, to medical devices, to sensing, communications and information technologies. The development of next generation devices requires ceaseless exploration of new materials with design principles of multi-functional systems that possess the desired electric and magnetic properties. Discovering new quantum behavior has often been the outcome of ventures into unexplored territory with the synthesis of a new material. My research program on the growth and characterization of novel materials has the potential to significantly impact progress in this area. The proposed research program explores new quantum materials with potentially beneficial properties. The primary emphasis is on the discovery, synthesis, characterization and understanding of new classes of quantum materials. To find quantum spin-liquid states in metals, non-trivial topological states in magnetic materials, and other desirable quantum states, the research targets specific types of compounds in which the magnetic transition-metal and rare-earth ions occupy frustrated lattice geometries. My research will make important progress on these problems by focusing on a particularly clean set of model materials, in which "quantum criticality and frustrated magnetism in metals" can be exploited to tune the balance between kinetic and potential energy in a controlled way. This has the potential to reveal useful and interesting new electronic states, and will allow us to carefully test and extend our understanding of strongly interacting electron systems. The proposed program will capitalize on our achievements and collaborations, and continue to set new directions in this field. At the same time, my research program will provide an outstanding training environment for highly qualified personnel, who will become tomorrow's leaders in this area.