Analytical Models for the Pulse Shape of a Superconductor-Ferromagnet Tunnel Junction Thermoelectric Microcalorimeter

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