Quasiparticle relaxation rates in Nb/AlO-x/Nb tunnel junctions due to Abrikosov vortices

J.B. Le grand; J. Martin; R.P. Hubener; A.W. Hamster; G.C.S. Brons; J. Flokstra

doi:10.1063/1.365281

Quasiparticle relaxation rates in Nb/AlO-x/Nb tunnel junctions due to Abrikosov vortices

J.B. Le grand, J. Martin, R.P. Hubener, A.W. Hamster, G.C.S. Brons, J. Flokstra

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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 Nb/AlO𝑥/Nb 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 14.8±1.4nm, which is slightly less than theoretical expectations.

Original language	English
Pages (from-to)	7413-7417
Number of pages	5
Journal	Journal of Applied Physics
Volume	81
Issue number	11
DOIs	https://doi.org/10.1063/1.365281
Publication status	Published - 1997

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title = "Quasiparticle relaxation rates in Nb/AlO-x/Nb tunnel junctions due to Abrikosov vortices",

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 Nb/AlO푥/Nb 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 14.8±1.4nm, which is slightly less than theoretical expectations.",

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T1 - Quasiparticle relaxation rates in Nb/AlO-x/Nb tunnel junctions due to Abrikosov vortices

AU - Le grand, J.B.

AU - Martin, J.

AU - Hubener, R.P.

AU - Hamster, A.W.

AU - Brons, G.C.S.

AU - Flokstra, J.

PY - 1997

Y1 - 1997

N2 - 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 Nb/AlO푥/Nb 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 14.8±1.4nm, which is slightly less than theoretical expectations.

AB - 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 Nb/AlO푥/Nb 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 14.8±1.4nm, which is slightly less than theoretical expectations.

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DO - 10.1063/1.365281

M3 - Article

SN - 0021-8979

VL - 81

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EP - 7417

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 11

ER -

Quasiparticle relaxation rates in Nb/AlO-x/Nb tunnel junctions due to Abrikosov vortices

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