High-Temperature Superconductivity

高温超导

• 批准号: RGPIN-2014-04200
• 负责人: Taillefer, Louis
• 金额: $ 9.62万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633509
• 关键词: Temperature; Superconductivity

Discoveries made by my research team since 2007 have transformed our understanding of electron behaviour in copper oxide superconductors, materials that hold the record for the highest temperature at which superconductivity – the ability of a metal to conduct electricity without resistance – persists, currently halfway between absolute zero and room temperature. The key outcome is a new electronic phase, called a charge density wave, now known to coexist with superconductivity in these materials. The main objective of our proposed research is to elucidate the nature and role of this new phase, in particular the extent to which it controls the strength of superconductivity.We will probe the behaviour of electrons by measuring the properties of several copper oxides in extreme conditions of low temperatures, high magnetic fields and high pressures. In parallel, we will also investigate other materials, in particular the iron-based high-temperature superconductors. These offer a unique opportunity to understand in detail the role of magnetism in causing superconductivity, another ingredient deemed important in copper oxides. Reaching a deep understanding of the fundamental mechanisms of high-temperature superconductivity would provide insight into ways of enhancing the performance.Achieving room-temperature superconductivity would cause a technological revolution. For example, it would transform the way electricity is transported, opening new pathways for the use of solar and wind energy.

我的研究团队自2007年以来的发现改变了我们对氧化铜超导体中电子行为的理解，这种材料保持着超导性-金属无电阻导电的能力-持续存在的最高温度记录，目前介于绝对零度和室温之间。关键的结果是一种新的电子相，称为电荷密度波，现在已知与这些材料中的超导性共存。我们研究的主要目标是阐明这种新相的性质和作用，特别是它控制超导强度的程度。我们将通过测量几种铜氧化物在低温、高磁场和高压等极端条件下的性质来探测电子的行为。同时，我们也将研究其他材料，特别是铁基高温超导体。这提供了一个独特的机会，可以详细了解磁性在导致超导性中的作用，这是氧化铜中另一种重要的成分。深入理解高温超导的基本机制将有助于深入了解提高性能的方法。实现室温超导将引发一场技术革命。例如，它将改变电力的运输方式，为太阳能和风能的使用开辟新的途径。