Anomalous anisotropic behaviour of spin-triplet proximity effect in Au/SrRuO 3 /Sr 2 RuO 4 junctions
Lee, S. R.
Robinson, J. W. A.
Nature Publishing Group UK
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Anwar, M. S., Kunieda, M., Ishiguro, R., Lee, S. R., Sow, C., Robinson, J. W. A., Yonezawa, S., et al. (2019). Anomalous anisotropic behaviour of spin-triplet proximity effect in Au/SrRuO 3 /Sr 2 RuO 4 junctions. Scientific Reports, 9 (1) https://doi.org/10.1038/s41598-019-52003-0
Abstract: Spin-polarized supercurrents can be generated with magnetic inhomogeneity at a ferromagnet/spin-singlet-superconductor interface. In such systems, complex magnetic inhomogeneity makes it difficult to functionalise the spin-polarized supercurrents. However, spin-polarized supercurrents in ferromagnet/spin-triplet-superconductor junctions can be controlled by the angle between magnetization and spin of Copper pairs (d-vector), that can effectively be utilized in developing of a field of research known as superconducting spintronics. Recently, we found induction of spin-triplet correlation into a ferromagnet SrRuO3 epitaxially deposited on a spin-triplet superconductor Sr2RuO4, without any electronic spin-flip scattering. Here, we present systematic magnetic field dependence of the proximity effect in Au/SrRuO3/Sr2RuO4 junctions. It is found that induced triplet correlations exhibit strongly anisotropic field response. Such behaviour is attributed to the rotation of the d-vector of Sr2RuO4. This anisotropic behaviour is in contrast with the vortex dynamic. Our results will stimulate study of interaction between ferromagnetism and unconventional superconductivity.
Article, /639/766/119/1003, /639/301/1005/1007, /639/301/119/544, /120, /142/126, /128, article
External DOI: https://doi.org/10.1038/s41598-019-52003-0
This record's URL: https://www.repository.cam.ac.uk/handle/1810/312310
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Licence URL: https://creativecommons.org/licenses/by/4.0/