Selected Publications
 

Efficiency of quasiparticle evacuation in superconducting devices

Sukumar Rajauria, L. M. A. Pascal, Ph. Gandit, F. W. J. Hekking, B. Pannetier, H. Courtois

We have studied the diffusion of excess quasiparticles in a current-biased superconductor strip in proximity to a metallic trap junction. In particular, we have measured accurately the superconductor temperature at a near-gap injection voltage. By analyzing our data quantitatively, we provide a full description of the spatial distribution of excess quasiparticles in the superconductor. We show that a metallic trap junction contributes significantly to the evacuation of excess quasiparticles.


Phys. Rev. B 85, 020505(R) (2012)

doi: 10.1103/PhysRevB.85.020505