Improved aluminum film transport properties and enhanced TES response in athermal phonon detectors: implications for quasiparticle dynamics
This paper reports that improving the grain size and residual-resistivity ratio of patterned aluminum films in Quasiparticle-trap-assisted Electro-thermal-feedback Transition-edge-sensor (QET) detectors significantly enhances signal strength and phonon collection efficiency for dark matter and CENS searches.