Muon spin rotation/relaxation investigations of magnetism in superconductors and coordination polymers

超导体和配位聚合物中磁性的μ子自旋旋转/弛豫研究

• 批准号: 238307-2011
• 负责人: Sonier, Jeffrey
• 金额: $ 1.6万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=524280
• 关键词: Muon; spin; rotation; relaxation; investigations

This proposal will primarily utilize newly constructed muon surface beam lines and the beta-decay NMR facility at TRIUMF to: 1) investigate the role inhomogeneity plays in the mechanism of high-temperature superconductivity, 2) determine the relevance of newly discovered magnetism in the heavily overdoped regime of high-temperature superconductors, 3) characterize and optimize magnetic interactions in a series of novel coordination polymers that make use of cyanometallate building blocks, 4) investigate the pairing symmetry of iron-based superconductors via measurements in the vortex state, 5) investigate the role of magnetic flux penetration in RF losses of superconducting Nb cavities used for charged-particle accelerators, and 6) investigate surface magnetism in gold nanostructures. In addition we will continue the development of a hyperpolarized xenon gas NMR method as an exquisitely senstive probe of surface properties with the potential to discover novel behaviour that has practical device applications.

该提案将主要利用新建的MUON表面光束线和Triumf的Beta-Decay NMR设施：1）研究作用不均匀性在高温超导性机制中起着不均匀性的作用，2）确定在重大发现的磁性中的相关性高温超导体的过量政权，3）在一系列新型的配位聚合物中表征和优化磁相互作用，这些磁相互作用利用氰化分析构建块，4）研究通过涡旋状态中的测量结果研究基于铁的超导体的配对对称性，5）研究磁通量渗透在用于带电粒子加速器的超导NB腔的RF损失中的作用，6）研究金纳米结构中的表面磁性。此外，我们将继续开发超极化的氙气NMR方法，作为对表面特性的精确探测，并有可能发现具有实际设备应用的新型行为。