Tunnel spectroscopy of a proximity Josephson junction

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2011
Major/Subject
Mcode
Degree programme
Language
en
Pages
214514/1-5
Series
Physical Review B, Volume 84, Issue 21
Abstract
We present tunnel spectroscopy experiments on the proximity effect in lateral superconductor–normal-metal–superconductor Josephson junctions. Our weak link is embedded into a superconducting ring allowing phase biasing of the Josephson junction by an external magnetic field. We explore the temperature and phase dependence of both the induced minigap and the modification of the density of states in the normal metal. Our results agree with a model based on the quasiclassical theory in the diffusive limit. The device presents an advanced version of the superconducting quantum interference proximity transistor, now reaching flux sensitivities of 3 nA/Φ0, where Φ0 is the flux quantum.
Description
Keywords
tunnel spectroscopy, Josephson junctions, superconductors, magnetic fields
Other note
Citation
Meschke, M. & Peltonen, J. T. & Pekola, Jukka & Giazotto, F. 2011. Tunnel spectroscopy of a proximity Josephson junction. Physical Review B. Volume 84, Issue 21. 214514/1-5. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.84.214514.