Spectral Absorption Shifts in CuCl Vs Pressure to 147 KBAR

摘要

Measurements of the absorption of CuCl in the spectral region 200 to 800 nm are reported as a function of pressure to 147 kbar. In this region, phase transitions are identified with the abrupt changes of the absorption cutoff, the pressure dependence of the cutoff is determined, and a log-linear response is found for the absorption with photon energy. The measurements are compared with recent published data and indicate a new anomaly for the band gap in our sample at high pressures. (ERA citation 06:016285)