π-0 transition in superconductor-ferromagnet-superconductor junctions

Chtchelkatchev, N. M. and Belzig, W. and Nazarov, Y. V. and Bruder, C.. (2001) π-0 transition in superconductor-ferromagnet-superconductor junctions. JETP letters, Vol. 74, H. 6. pp. 323-327.

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Official URL: http://edoc.unibas.ch/dok/A5252852

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Superconductor-ferromagnet-superconductor (SFS) Josephson junctions are known to exhibit a transition between pi and 0 states. In this letter, we find the pi -0 phase diagram of an SFS junction depending on the transparency of an intermediate insulating layer (I). We show that, in general, the Josephson critical current is nonzero at the pi -0 transition temperature. Contributions to the current from the two spin channels nearly compensate each other, and the first harmonic of the Josephson current as a function of phase difference is suppressed. However, higher harmonics give a nonzero contribution to the supercurrent.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Bruder, Christoph
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Variant title: pi-0 transition in superconductor-ferromagnet-superconductor junctions -- Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:27
Deposited On:22 Mar 2012 13:56

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