Study of the role of antiferromagnetic fluctuations in the fermiology of hole-doped cuprates via advanced time-resolved spectroscopies

在这项新的国际合作中，我们将结合先进的时间分辨光谱技术，研究典型的量子材料高温铜酸盐超导体的动力学性质。特别是，通过跟踪动量和能量分辨率的电子能带结构的瞬时变化，我们将设计定制的超短激光激励，以揭示反铁磁序的波动如何影响空穴掺杂铜酸盐的电子性质，从而导致高温非传统超导的出现。为了实现这个项目的目标，我们将利用INRS-EMT的先进激光光源(ALLS)用户设备的独特能力，大规模自由电子激光设备，以及这个团队在量子物质超快科学方面的专业知识。这个项目将在INRS和哈佛大学之间建立新的合作关系，这将导致在量子材料的新兴光控制领域培养高素质的人才。此外，这项研究将为实现非传统超导所需的基本成分提供前所未有的见解，以及如何利用光-物质相互作用有效地调节量子材料的电子性质，并推动物质在超快时间尺度上出现新的量子相，从而使加拿大在未来基于量子的技术的设计和工程方面处于有利地位。

Throughout this new international collaboration between the Institut National de la Recherche Scientifique, Énergie Matériaux Télécommunications Research Centre (INRS-EMT), and Harvard University, we will combine advanced time-resolved spectroscopy techniques to investigate the dynamical properties of high-temperature cuprate superconductors, the prototypical quantum materials. In particular, by tracking transient changes of the electronic band structure with momentum- and energy-resolution, we will design tailored ultrashort laser excitations to unveil how fluctuating antiferromagnetic order impacts the electronic properties of hole-doped cuprates, thus consequently, the emergence of high-temperature unconventional superconductivity. To achieve this project's goals, we will take advantage of the unique capabilities of the Advanced Laser Light Source (ALLS) user facility at INRS-EMT, large-scale free-electron laser facilities, as well as the expertise of this team in ultrafast science of quantum matter.This project will seed a new collaboration between INRS and Harvard University, which will result in the training of highly qualified personnel in the emergent field of light control of quantum materials. Furthermore, this research will offer unprecedented insights into the fundamental ingredients needed to achieve unconventional superconductivity, as well as how light-matter interaction can be used to effectively tune the electronic properties of quantum materials and drive the emergence of novel quantum phases of matter on ultrafast timescales, thus positioning Canada in a privileged position for the design and engineering of the quantum-based technology of tomorrow.