Quasiparticle relaxation rates in Nb/AlOx/Nb tunnel junctions due to Abrikosov vortices
- 1 June 1997
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 81 (11) , 7413-7417
- https://doi.org/10.1063/1.365281
Abstract
Superconducting tunnel junctions are promising detector elements in next generation x-ray, UV, and optical detectors. Quasiparticles which approach the neighborhood of the normal core may scatter and emit a phonon, thus being trapped in the Abrikosov vortex (AV). In this way the existence of AVs reduces the lifetime of quasiparticles. In this experiment excess quasiparticles in a junction are created by means of a low temperature scanning electron microscope. The trapping rate of quasiparticles into AVs is determined by measuring the quasiparticle lifetime as a function of the AV concentration. This results in an effective trapping radius of the AV of which is slightly less than theoretical expectations.
This publication has 11 references indexed in Scilit:
- Spatial inhomogeneities in the energy response of a tunnel junction detector due to penetration of Abrikosov vorticesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
- Quasiparticle lifetimes and tunneltimes in SIS junctions for X-ray spectroscopyNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
- High-resolution X-ray detectors with high-speed SQUID readout of superconducting tunnel junctionsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
- Response of niobium-based superconducting tunnel junctions in the soft-x-ray region 0.15–6.5 keVPhysical Review B, 1996
- Low temperature scanning electron microscopy of superconducting thin films and Josephson junctionsReports on Progress in Physics, 1994
- Quasiparticle relaxation rates in a spatially inhomogeneous superconductorPhysica C: Superconductivity and its Applications, 1993
- The properties of niobium superconducting tunneling junctions as X-ray detectorsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992
- Quasiparticle trapping and the quasiparticle multiplierApplied Physics Letters, 1987
- Possibility of high resolution detectors using superconducting tunnel junctionsNuclear Instruments and Methods in Physics Research, 1982
- Quasiparticle and phonon lifetimes in superconductorsPhysical Review B, 1976