Time-resolved study of photoinduced dynamics of the cuprate superconducting gap

铜酸盐超导能隙光致动力学的时间分辨研究

• 批准号: 578637-2022
• 负责人: Damascelli, AndreaA
• 金额: $ 1.82万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762767
• 关键词: Time; resolved; study; photoinduced; dynamics

Ultrashort light pulses are emerging as a powerful tool for achieving the all-optical manipulation of electronic properties in quantum materials on time scales faster than 100 fs. We propose a new international collaboration to explore the study of the light-induced properties in cuprate superconductors, a fundamentally and technologically important family of quantum materials based on copper and oxygen. To understand the electronic response of these superconductors to ultrafast laser light pulses, we propose a combined experimental and theoretical investigation of light-induced dynamics in the cuprate material Bi2Sr2CaCu2O8+d. A premier experimental probe of dynamical electronic properties in quantum materials located in the Damascelli lab, known as 'time- and angle-resolved photoemission spectroscopy', will be the focus of the proposed collaborative work. Contemporary theoretical methods are crucial to guide experimentation and interpretation of the resulting data with this new instrument. This application will enable a first-time collaboration with internationally recognized condensed matter theorist Adrian Feiguin at Northeastern University in Boston, USA. Feiguin proposes to employ an advanced theoretical method known as time-dependent density matrix renormalization group to describe the time evolution of superconductivity in the cuprates following excitation with an ultrafast light pulse. The proposed collaboration is expected to lead to longer-term studies, high-impact publications, and an exchange of knowledge and expertise, which will position both groups to be world leaders in the next generation of quantum materials' research. The novel properties of these materials are of strategic importance to UBC and Canada and could lead to major breakthroughs in areas ranging from advanced manufacturing to quantum computing, cryptography, and information. The work will also contribute to the training of an emerging quantum workforce, which is in high demand for the growing field of quantum science & technology.

超短光脉冲正在成为一种强大的工具，可在快于 100 fs 的时间尺度上实现量子材料电子特性的全光学操控。我们提议开展一项新的国际合作，探索铜酸盐超导体的光致特性研究，铜酸盐超导体是一种在基础上和技术上都很重要的基于铜和氧的量子材料家族。为了了解这些超导体对超快激光脉冲的电子响应，我们提出了对铜酸盐材料 Bi2Sr2CaCu2O8+d 中光致动力学的联合实验和理论研究。位于达马斯切利实验室的量子材料动态电子特性的首要实验探针，称为“时间和角度分辨光电子能谱”，将是拟议合作工作的重点。现代理论方法对于指导使用这种新仪器进行实验和解释所得数据至关重要。该应用程序将实现与美国波士顿东北大学国际公认的凝聚态理论家 Adrian Feiguin 的首次合作。费金提出采用一种称为时间相关密度矩阵重整化群的先进理论方法来描述超快光脉冲激发后铜酸盐中超导性的时间演化。拟议的合作预计将带来更长期的研究、高影响力的出版物以及知识和专业知识的交流，这将使两个小组成为下一代量子材料研究的世界领导者。这些材料的新颖特性对 UBC 和加拿大具有战略重要性，可能会在先进制造、量子计算、密码学和信息等领域带来重大突破。这项工作还将有助于培训新兴的量子劳动力，这对不断发展的量子科学技术领域有着很高的需求。