Josephson effects in the spin-triplet superconductor/altermagnet/spin-triplet superconductor junctions: The detection of the intrinsic d-vector
Ya-Ting Han, Li-Juan Chen, Wen-Ting Liu, Qiang Cheng, Qing-Feng Sun
DOI 10.1103/zdyn-y6mv · Physical Review B
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Abstract
We study the Josephson effects in the spin-triplet superconductor/altermagnet/spin-triplet superconductor junctions using the Green's function method. It is found that the current-phase difference relationships in the junctions strongly depend on the direction of the d-vectors in the spin-triplet superconductors and the orientation angle of the altermagnet. For the given orientation angle, the 0-π transition can be obtained when the d-vector is rotated. The variations of the critical current of the junctions with the direction of the d-vector, the orientation angle and the strength of altermagnetism are systematically investigated. These Josephson effects can provide the distinguishable information about the direction of the d-vector. Compared to the existing research, the proposed altermagnetic Josephson junctions can effectively avoid the negative influence of the magnetic field on the d-vector and can serve as a feasible scheme for the detection of the intrinsic d-vector. The obtained 0-π transition in the junctions can also have potential applications in the design of quantum devices.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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