Superconducting tunnel junctions and quasiparticle trapping
| Autor: | P.L. Brink, N.E. Booth, A. D. Hahn, G. L. Salmon, R. J. Gaitskell, D.J. Goldie, A.M. Swift |
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| Rok vydání: | 1993 |
| Předmět: |
Physics
Superconductivity Condensed matter physics Phonon Relaxation (NMR) Trapping Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Condensed Matter::Superconductivity Quasiparticle Superconducting tunnel junction Particle Condensed Matter::Strongly Correlated Electrons General Materials Science Cooper pair |
| Zdroj: | Journal of Low Temperature Physics. 93:521-532 |
| ISSN: | 1573-7357 0022-2291 |
| Popis: | The interaction of a nuclear particle or X-ray with a superconductor leads to the breaking of Cooper pairs and the creation of excess phonons and quasiparticles. The basic physics and the use of superconducting tunnel junctions as detectors of excess quasiparticles are reviewed. For superconducting absorbers of appreciable mass intrinsic limitations require the use of the phenomenon of quasiparticle trapping. The relaxation phonons released in the trapping process can also be detected and they can lead to amplification via further pair breaking. Superconducting tunnel junctions can also detect phonons produced by particle interactions in a substrate absorber. The use of series-connected arrays of junctions to achieve high sensitivity and good energy resolution is discussed. |
| Databáze: | OpenAIRE |
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