TY - JOUR
T1 - Quasiparticle dynamics in superconducting tunnel junctions
AU - Kozorezov, A.G.
AU - Brammertz, G.
AU - Brammertz, G.
AU - Hijmering, R.A.
AU - Wigmore, J.K.
AU - Peacock, A.
AU - Martin, B.
AU - Martin, D.
AU - Verhoeve, P.
AU - Golubov, Alexandre Avraamovitch
AU - Rogalla, Horst
N1 - Proceedings of the 11th International Workshop on Low Temperature Detectors - LTD-11
PY - 2006
Y1 - 2006
N2 - Superconducting Tunnel Junctions (STJs) used as single photon detectors possess extreme sensitivity and excellent resolving power. However, like many other cryogenic detectors they operate under extremely non-equilibrium conditions. In order to understand the physics of the non-equilibrium, non-stationary state, to interpret experimental data adequately, and to optimize the STJs unique performance, it is necessary to use a fully kinetic approach. We have developed the detailed theory of interactions between quasiparticles (qps) and the two types of phonons, sub-gap and pair-breaking, in STJ photon detectors. We discuss the results of extensive sets of experiments to study the non-equilibrium state in Al-based STJs. For the first time we are capable of explaining all available data systematically using a single set of parameters determined from STJ diagnostics and independent experiments.
AB - Superconducting Tunnel Junctions (STJs) used as single photon detectors possess extreme sensitivity and excellent resolving power. However, like many other cryogenic detectors they operate under extremely non-equilibrium conditions. In order to understand the physics of the non-equilibrium, non-stationary state, to interpret experimental data adequately, and to optimize the STJs unique performance, it is necessary to use a fully kinetic approach. We have developed the detailed theory of interactions between quasiparticles (qps) and the two types of phonons, sub-gap and pair-breaking, in STJ photon detectors. We discuss the results of extensive sets of experiments to study the non-equilibrium state in Al-based STJs. For the first time we are capable of explaining all available data systematically using a single set of parameters determined from STJ diagnostics and independent experiments.
KW - IR-74517
KW - METIS-233776
U2 - 10.1016/j.nima.2005.12.107
DO - 10.1016/j.nima.2005.12.107
M3 - Article
SN - 0168-9002
VL - 559
SP - 695-
JO - Nuclear instruments & methods in physics research. Section A : Accelerators, spectrometers, detectors and associated equipment
JF - Nuclear instruments & methods in physics research. Section A : Accelerators, spectrometers, detectors and associated equipment
IS - 2
ER -