Collaboration with Brookhaven National Laboratory on novel superconductors

我们将与BNL合作研究强关联电子系统中的电子和声子弛豫过程，例如铜酸盐高温超导体。用BNL的超快(飞秒)时间分辨光谱测量的光激发电子和光致晶格膨胀的动力学，将在我们的金属化合物热电子弛豫理论的框架内进行分析。利用动力学方程和实验弛豫时间的精确解析解，我们旨在解决一个有争议的问题，即在新型超导体中，电子-声子相互作用是关键的，还是微弱的和不必要的。

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.