Theory of noncentrosymmetric and other unconventional superconductors

非中心对称和其他非常规超导体理论

• 批准号: RGPIN-2015-06656
• 负责人: Samokhin, Kirill
• 金额: $ 1.38万
• 依托单位: Brock University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=677034
• 关键词: Theory; noncentrosymmetric; other; unconventional; superconductors

One of the major driving forces of modern technology is the research into new materials. Superconductors, which are the materials that can conduct electricity without any energy losses, are of particular importance. The majority of superconducting materials at the focus of current research belong to the class of unconventional superconductors. High-temperature cuprates and iron pnictides, strontium ruthenate, heavy-fermion and organic compounds are just some of the examples. Superconductors are said to be "unconventional" if their properties cannot be explained by the standard microscopic theories of superconductivity, in particular, the Bardeen-Cooper-Schrieffer model.***The main objective of the research proposal is to better understand, both microscopically and phenomenologically, such interesting novel materials as superconductors without inversion symmetry and other "topological superconductors", and also ferromagnetic superconductors. Even in conventional superconductors, going beyond the domain of the Bardeen-Cooper-Schrieffer theory often reveals rich physics, for instance, the dramatic effects of fluctuations in nonuniform superconducting phases, whose understanding requires new ideas and theoretical techniques.****We hope that the results of this research will provide insight into the physics of other complex superconducting and superfluid systems. The broader impact resulting from the proposed activity will be training of a new generation of highly qualified personnel through an exposure to a wide range of ideas and methods of contemporary condensed matter physics. **

现代技术的主要驱动力之一是对新材料的研究。超导体是一种可以在不损失任何能量的情况下导电的材料，它具有特别重要的意义。目前研究的重点超导材料大多属于非常规超导体。高温铜酸盐和铁硝酸盐、Ruthenate锶、重费米子和有机化合物只是其中一些例子。如果超导体的性质不能用超导的标准微观理论，特别是Bardeen-Cooper-Schrieffer模型来解释，那么超导体就被称为“非传统的”。*这项研究计划的主要目的是从微观和现象学上更好地理解诸如没有反转对称性的超导体和其他“拓扑超导体”等有趣的新材料，以及铁磁超导体。即使在常规超导体中，超越Bardeen-Cooper-Schrieffer理论的范围也往往揭示了丰富的物理学，例如，非均匀超导相中涨落的戏剧性效应，这需要新的思想和理论技术来理解。*我们希望这项研究的结果将为其他复杂的超导和超流系统的物理学提供借鉴。拟议活动产生的更广泛影响将是通过接触当代凝聚态物理的广泛思想和方法来培训新一代高素质人员。**