The Effect of Magnetic Impurities on the Response of Superconducting Photon Detectors

被引：1

作者：

Kozorezov, Alexander G. ^{[1
]}

Golubov, Alexander A. ^{[2
]}

Wigmore, J. Keith ^{[1
]}

Martin, Didier ^{[3
]}

Verhoeve, Peter ^{[3
]}

Hijmering, Richard A. ^{[3
]}

Jerjen, Iwan ^{[3
]}

机构：

[1] Univ Lancaster, Dept Phys, Lancaster, England

[2] Univ Twente, Dept Appl Phys, NL-7500 AE Enschede, Netherlands

[3] European Space Agcy, Adv Studies & Technol Preparat Div, Directorate Sci & Robot Explorat, Estec, NL-2200 AG Noordwijk, Netherlands

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 03期

关键词：

Magnetic impurities; photon detector; superconductor; TUNNEL-JUNCTIONS; PARAMAGNETIC IMPURITIES; DYNAMICS; ALLOYS;

D O I：

10.1109/TASC.2009.2018062

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In a superconductor with magnetic impurities, scattering of conduction electrons results in the formation of localized states inside the superconducting gap. We show that inelastic electronic transitions involving quasiparticle scattering into and out of the localized states result in significant changes in the non equilibrium properties of the superconductor. The individual processes are: quasiparticle trapping into discrete states, enhanced recombination with localized quasiparticles, and pair breaking and de-trapping of localized quasiparticles by sub-gap phonons. We find that all these processes give rise to clearly distinguishable temperature dependences of the kinetic parameters indicating a possible role of magnetic scattering on the response of a photon detector.

引用

页码：440 / 444

页数：5

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