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Transitions between "$π$" and "0" states in superconductor -- ferromagnet -- superconductor junctions

N. M. Chtchelkatchev
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Abstract

Experimental and theoretical study of superconductor (S) -- ferromagnet (F) -- superconductor junctions showed that in certain range of parameters (e.g., the length of the ferromagnet $d_F$, the exchange field, $E_{\rm ex}$) the ground state of a SFS junction corresponds to superconducting phase difference $π$ or 0. The phase diagram of a SFS junction with the respect to $π$ and 0 states is investigated in this letter in $E_{\rm ex}, d_{F}, T$ space. It is shown that the phase diagram is very sensitive to the geometry of the system, in particular, to the amount of disorder.

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N. M. Chtchelkatchev. 2004-12-04. Transitions between "$π$" and "0" states in superconductor -- ferromagnet -- superconductor junctions. https://doi.org/10.1134/1.1868798

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