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.

Ultrashort Light脉冲正在成为一种强大的工具，用于实现超过100 fs的量子尺度中对电子性能的全光操作。我们提出了一项新的国际合作，以探索对铜矿超导体中光诱导的性质的研究，这是一种基本和技术上重要的量子材料家族，基于铜和氧气。为了了解这些超导体对超快激光脉冲的电子响应，我们提出了对铜材料材料BI2SR2CACU2O8+d的光诱导动力学的合并实验和理论研究。在Damascelli实验室中的量子材料中的动态电子性质的主要实验探针，称为“时间和角度分辨光发射光谱”，将是拟议的协作工作的重点。当代理论方法对于通过这种新工具指导所得数据的实验和解释至关重要。该申请将与美国波士顿东北大学的国际认可的凝分理论家阿德里安·费金（Adrian Feiguin）进行首次合作。 Feiguin提议采用一种高级理论方法，称为时间依赖性密度矩阵重新归一化组来描述用超快的光脉冲激发后丘比特中超导性的时间演化。拟议的合作有望导致长期研究，高影响力出版物以及知识和专业知识的交流，这将使这两个群体成为下一代量子材料研究的世界领导者。这些材料的新型特性对UBC和加拿大具有战略意义，并且可能导致从高级制造到量子计算，加密和信息的领域取得重大突破。这项工作还将有助于培训新兴的量子劳动力，这对量子科学技术的增长领域的需求很高。