  The superconductor-ferromagnet thermoelectric detector (SFTED) is a novel
ultrasensitive radiation detector based on the giant thermoelectric effect in
superconductorferromagnet tunnel junctions. We demonstrate analytical models
and solutions in the time domain for a SFTED operated as a microcalorimeter
(pulse excitation), in the linear smallsignal limit. Based on these solutions,
the signal current and temperature pulse response were studied for two
different electrical circuit models, providing design conditions for stable and
non-oscillatory response.
