DocumentCode :
1122603
Title :
Geometric 
Josephson Junction: Current-Phase Relations and Critical Current
Author :
Gumann, Andreas ; Iniotakis, Christian ; Schopohl, Nils
Author_Institution :
Center for Collective Quantum Phenomena, Univ. of Tuebingen, Tubingen, Germany
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
711
Lastpage :
714
Abstract :
Josephson junctions with an intrinsic phase shift of pi, so-called pi Josephson junctions, can be realized by a weak link of a d -wave superconductor with an appropriate boundary geometry. A model for the pairing potential of an according weak link is introduced which allows for the calculation of the influence of geometric parameters and temperature. From this model, current-phase relations and the critical current of the device are derived. The range of validity of the model is determined by comparison with self-consistent solutions.
Keywords :
Josephson effect; critical currents; d-wave superconductivity; high-temperature superconductors; phase shifters; superconducting junction devices; superconducting thin films; boundary geometry; critical current; current-phase relations; d -wave superconductor; epitactic c-axis oriented thin film; geometric parameters; geometric pi Josephson junction; high-temperature superconductors; intrinsic phase shift; pairing potential; superconducting weak links; High-temperature superconductors; Josephson junctions; superconducting microbridges; superconducting phase shifters; superconducting weak links;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2019586
Filename :
5153081
Link To Document :
