New Quantum Materials with Spin Liquid Ground States

这个NSERC联盟国际催化剂量子计划应用程序新量子材料与自旋液体基态旨在启动量子材料发现，改进和先进表征的综合计划，这将允许识别并最终理解具有纠缠量子自旋液体基态的新材料。 这些新材料将被发现，合成和完善使用几何挫折作为一个关键的设计原则。 这一原理是基于将基于互连三角形、四面体和蜂窝结构的晶体结构纳入新材料的整体结构中。 这些磁矩和其他相互作用的电子自由度存在于这些架构上，并起到“挫败”物质的良好建立的有序状态的作用，例如简单的铁磁性和反铁磁性。 理论上已知具有这种基态的新材料具有基本激发，其可以显示与表征传统材料的费米子和玻色子不同的统计。 这种明显的量子特性是它们显著的低温特性的基础。 这个NSERC联盟国际催化剂量子计划汇集了加拿大，英国和法国的三个研究小组，具有互补和高水平的专业知识和基础设施，这将使这样一个全面的量子材料研究计划从开始到完成。 这个合作研究计划本质上是跨学科的，因为它需要探索和发现新的量子材料，生长感兴趣的材料的多晶和单晶样品，然后通过中子散射，核磁共振和muSR技术进行高级表征。 其国际层面将更好地整合加拿大的量子材料活动与欧洲的大型设施，利用中子散射和muSR技术进行先进的表征。

This NSERC Alliance International Catalyst Quantum Program application New Quantum Materials with Spin Liquid Ground States is intended to initiate a comprehensive program of quantum materials discovery, refinement and advanced characterization which will allow new materials with entangled quantum spin liquid ground states to be identified and ultimately understood. These new materials will be discovered, synthesized and refined using geometrical frustration as a key design principle. This principle is based on the incorporation of crystalline architectures based on interconnected triangles, tetrahedra, and honeycomb structures, into the overall structure of new materials. These magnetic moments and other interacting electronic degrees of freedom reside on these architectures and act to "frustrate" well established ordered states of matter, such as simple ferro and anti ferromagnetism. New materials with such ground states are theoretically known to possesses elementary excitations which can display statistics distinct from the fermions and bosons that characterize traditional materials. Such distinctly quantum characteristics underly their remarkable low temperature properties. This NSERC Alliance International Catalyst Quantum Program brings together three research groups in Canada, the UK and France, with complementary and high level expertise and infrastructure, and which will allow such a comprehensive program of quantum materials research to be carried out from initiation to completion. This collaborative research program is inherently interdisciplinary, as it requires exploration and discovery of new quantum materials, the growth of polycrystalline and single crystal samples of the materials of interest, followed by advanced characterization by neutron scattering, nuclear magnetic resonance, and muSR techniques. Its international dimension will better integrate Canada's quantum materials activities with European large scale facilities for advanced characterization using neutron scattering and muSR techniques.