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Theory of Josephson effect in Sr2RuO4/diffusive normal metal/Sr2RuO4 junctions

โœ Scribed by Y. Sawa; T. Yokoyama; Y. Tanaka; A.A. Golubov

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
155 KB
Volume
463-465
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

We derive a generalized Nazarov's boundary condition for diffusive normal metal (DN)/chiral p-wave superconductor (CP) interface including the macroscopic phase of the superconductor. The Josephson effect is studied in CP/DN/CP junctions solving the Usadel equations under the above boundary condition. We find that, enhancement of a critical current at low temperature is small compared with that in p x -wave /DN/p x -wave junctions. As a result, temperature dependence of the critical current in these junctions is similar to that in conventional junctions. The result is consistent with the experiment in Sr 2 RuO 4 -Sr 3 RuO 7 eutectic junctions. Similar feature is also found in current-phase relation.

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