Local trap spectroscopy in superconducting tunnel junctions

Authors
Kozorezov, AG Wigmore, JK Peacock, A Poelaert, A Verhoeve, P den Hartog, R Brammertz, G
Citation
Ag. Kozorezov et al., Local trap spectroscopy in superconducting tunnel junctions, APPL PHYS L, 78(23), 2001, pp. 3654-3656
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
23
Year of publication
2001
Pages
3654 - 3656
Database
ISI
SICI code
0003-6951(20010604)78:23<3654:LTSIST>2.0.ZU;2-4
Abstract
We show that thermal activation of quasiparticles from local traps is respo nsible for the temperature variation of responsivity observed for some supe rconducting tunneling junction photon detectors. With this model, the depth of the local traps in two different proximized Ta structures was found to be the same, 0.20 +/-0.02 meV. (C) 2001 American Institute of Physics.