New Quantum Materials with Spin Liquid Ground States

具有自旋液态基态的新型量子材料

• 批准号: 580938-2022
• 负责人: Gaulin, BruceBD
• 金额: $ 1.82万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762783
• 关键词: New; Quantum; Materials; Spin; Liquid

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.

NSERC 联盟国际催化剂量子计划申请“具有自旋液态基态的新型量子材料”旨在启动一项量子材料发现、精炼和高级表征的综合计划，这将使具有纠缠量子自旋液态基态的新材料得到识别并最终被理解。 这些新材料将使用几何挫败作为关键设计原则来发现、合成和精炼。 这一原理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。 这些磁矩和其他相互作用的电子自由度驻留在这些架构上，并起到“挫败”良好建立的有序物质状态的作用，例如简单的铁磁性和反铁磁性。 理论上，具有这种基态的新材料具有基本激发，可以显示与传统材料所特有的费米子和玻色子不同的统计数据。 这种明显的量子特性是其卓越的低温特性的基础。 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，拥有互补的高水平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能够从启动到完成。 该合作研究项目本质上是跨学科的，因为它需要探索和发现新的量子材料、感兴趣材料的多晶和单晶样品的生长，然后通过中子散射、核磁共振和 muSR 技术进行高级表征。 其国际规模将更好地将加拿大的量子材料活动与欧洲大型设施结合起来，利用中子散射和 muSR 技术进行高级表征。