Improving the performance of hot-electron bolometers and solid state coolers with disordered alloys

作者：L. J. Taskinen, Ilari J. Maasilta · 发表于：Applied Physics Letters · 年份：2006 · DOI：10.1063/1.2357555 · 被引用次数：25 · 研究领域：Superconducting and THz Device Technology、Physics of Superconductivity and Magnetism、Thermal Radiation and Cooling Technologies

Normal metal-insulator-superconductor tunnel junctions were used as thermometers at sub-Kelvin temperatures to study the electron-phonon (e-p) interaction in thin aluminum films doped with manganese, as a function of manganese concentration. The temperature dependence of the e-p interaction is consistent with an existing theory for disordered metals. The strength of the interaction decreases with increasing manganese concentration, providing a means to improve sensitivity of detectors and the base temperature of solid state coolers.