Collaboration with Brookhaven National Laboratory on novel superconductors

与布鲁克海文国家实验室合作开发新型超导体

• 批准号: EP/H004483/1
• 负责人: A Alexandrov
• 金额: $ 1.07万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FH004483%2F1
• 关键词: Collaboration; Brookhaven; National; Laboratory; novel

We shall investigate in collaboration with BNL electron and phonon relaxation processes in strongly correlated electron systems such as cuprate high-temperature superconductors. The dynamics of photoexcited electrons and photoinduced lattice expansions, measured by ultrafast (femtosecond) time-resolved spectroscopy at BNL, will be analysed in the framework of our theory of hot electron relaxation in metallic compounds. Using the exact analytical solutions of the kinetic equations and experimental relaxation times, we are aiming to resolve a controversial issue concerning whether the electron-phonon interaction is crucial, or else weak and inessential in novel superconductors.

我们将与BNL合作研究强关联电子系统（如铜酸盐高温超导体）中的电子和声子弛豫过程。光激发电子和光致晶格膨胀的动力学，在BNL超快（飞秒）时间分辨光谱测量，将在我们的热电子弛豫理论的框架内分析金属化合物。利用动力学方程的精确解析解和实验弛豫时间，我们的目标是解决一个有争议的问题，即电子-声子相互作用是否是至关重要的，或者在新的超导体中是微弱的和不必要的。