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Current-Phase Relation of a Ferromagnetic Josephson Junction Between Triplet Superconductors
New Physics: Sae Mulli 2017; 67: 1042~1047
Published online September 29, 2017;
© 2017 New Physics: Sae Mulli.

Chi-Hoon CHOI*

Department of Nanophysics, Gachon University, Seongnam 13120, Korea
Correspondence to:
Received July 11, 2017; Revised August 2, 2017; Accepted August 3, 2017.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
We study the Josephson effect of a T$_1$FT$_2$ junction consisting of spin-triplet superconductors (T), a weak ferromagnetic metal (F), and ferromagnetic insulating interfaces. Two types of the triplet order parameters are considered: $(k_x +ik_y)\hat{z}$ and $k_x \hat{x}+k_y\hat{y}$. We compute the current density in the ballistic limit by using the generalized quasiclassical formalism developed to take into account the interference effect of a multilayered ferromagnetic junction. We discuss in detail how the current-phase relation is affected by the orientations of the d-vectors of the superconductor and the magnetizations of the ferromagnetic tunneling barrier. A general condition for the anomalous Josephson effect is also derived.
PACS numbers: 74.50.+r, 74.20.Rp, 74.45.+c
Keywords: Josephson effect, Superconductor-ferromagnet junction, Spin-triplet superconductor

September 2017, 67 (9)