Title :
Dilute Al-Mn alloys for superconductor tunneling and other devices
Author :
Ruggiero, S.T. ; Arnold, G.B. ; Williams, A. ; Clark, A.M. ; Miller, N.A. ; Ullom, J.N.
Author_Institution :
Dept. of Phys., Univ. of Notre Dame, IN, USA
fDate :
6/1/2005 12:00:00 AM
Abstract :
The authors present tunneling results for junctions comprising Mn doped Al films produced by sputter deposition, with Mn concentrations in the range of 0-5000 ppm. Our results for S´/I/S´, S´/I/S, and N/I/S junctions demonstrate that Al-Mn alloys can serve both as superconductors with critical temperatures reduced from that of Al and as normal metals. The authors find Al-Mn in this doping range to be otherwise identical to pure Al in terms of its BCS-like tunnel characteristics (for superconductors) and its ability to produce high-quality tunnel barriers.
Keywords :
aluminium alloys; dilute alloys; manganese alloys; sputtered coatings; superconducting junction devices; superconducting thin films; superconducting transition temperature; superconductive tunnelling; Al-Mn; critical temperatures; dilute alloys; sputter deposition; superconducting aluminum alloys; superconductor tunneling devices; tunnel barriers; tunnel characteristics; Aluminum alloys; Gold; Ion implantation; Josephson junctions; Manganese alloys; Sputtering; Superconducting films; Superconducting materials; Superconducting transition temperature; Tunneling; Al-Mn; resonant scattering; superconducting aluminum alloys; tunneling;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849710
