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: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=546946
• 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.

该提议主要将主要利用Triumf的新建造的MUON表面梁线和β-付费NMR设施：1）调查在高温超导性机制中的作用不均匀性在高温超导性的机制中，2）确定新型磁性磁性在较重的高位效果中的相关性，是高表现型的相关性，该型号的高度超级型号，超级超级超级型号，33利用氰酸酯的构建基块的协调聚合物，4）通过涡旋状态中的测量来研究基于铁的超导体的对称性，5）研究磁通量渗透在RF损失的NB超导型NB腔损失中的作用，用于带电的 - 型 - 腔剂，用于带电的固定剂，以及6）研究表面宏伟的金色NananoStruse。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。