Quantum cluster methods for strongly correlated materials

强相关材料的量子簇方法

• 批准号: RGPIN-2015-05598
• 负责人: Sénéchal, David
• 金额: $ 2.19万
• 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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=664732
• 关键词: Quantum; cluster; methods; strongly; correlated

Our understanding of materials has long been based on simple paradigms: metals can be understood in terms of quasi-independent electrons, undergoing occasional collisions; at the other extreme, magnets are understood in terms of the spins of localized electrons. But between these paradigms lies a spectrum of materials that defy comprehension in terms of these simple pictures, even though they may show characteristics of both. High-temperature superconductors, discovered nearly 30 years ago, are the prototype of such "strongly correlated materials". Such materials display a variety of fascinating properties, from superconductivity to exotic magnetism, charge order, etc. They have tremendous potential. Technological advances based on these properties will be guided by a deeper understanding of strongly correlated materials.***The objective of this proposal is two-fold: (1) to develop computational tools to understand and calculate properties of strongly correlated materials and (2) to apply these methods to a variety of systems, some generic, other representing real materials.

长期以来，我们对材料的理解都基于简单的范式：金属可以用准独立的电子来理解，偶尔会发生碰撞；在另一个极端，磁体是根据局域电子的自旋来理解的。但在这些范式之间存在着一系列材料，这些材料无法通过这些简单的图片来理解，尽管它们可能显示出两者的特征。近30年前发现的高温超导体是这种“强相关材料”的原型。此类材料表现出各种令人着迷的特性，从超导性到奇异磁性、电荷有序性等。它们具有巨大的潜力。基于这些特性的技术进步将以对强相关材料的更深入理解为指导。***该提案的目标有两个：(1) 开发计算工具来理解和计算强相关材料的特性，以及 (2 ）将这些方法应用于各种系统，一些系统是通用的，另一些则代表真实材料。