Quasiparticle-diffusion-based heating in superconductor tunneling microcoolers
Quasiparticle-diffusion-based heating in superconductor tunneling microcoolers
In a hybrid Superconductor-Insulator-Normal metal tunnel junction biased just below the gap, the extraction of hot electrons out of the normal metal results in electronic cooling effect. The quasiparticles injected in the superconductor accumulate near the tunnel interface, thus increasing the effective superconductor temperature. We propose a simple model for …