A1 Journal article (refereed)
Superconducting Triplet Rim Currents in a Spin-Textured Ferromagnetic Disk (2022)

Fermin, R., van Dinter, D., Hubert, M., Woltjes, B., Silaev, M., Aarts, J., & Lahabi, K. (2022). Superconducting Triplet Rim Currents in a Spin-Textured Ferromagnetic Disk. Nano Letters, 22(6), 2209-2216. https://doi.org/10.1021/acs.nanolett.1c04051

JYU authors or editors

Publication details

All authors or editorsFermin, Remko; van Dinter, Dyon; Hubert, Michel; Woltjes, Bart; Silaev, Mikhail; Aarts, Jan; Lahabi, Kaveh

Journal or seriesNano Letters



Publication year2022

Publication date03/03/2022


Issue number6

Pages range2209-2216

PublisherAmerican Chemical Society (ACS)

Publication countryUnited States

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/80191


Since the discovery of the long-range superconducting proximity effect, the interaction between spin-triplet Cooper pairs and magnetic structures such as domain walls and vortices has been the subject of intense theoretical discussions, while the relevant experiments remain scarce. We have developed nanostructured Josephson junctions with highly controllable spin texture, based on a disk-shaped Nb/Co bilayer. Here, the vortex magnetization of Co and the Cooper pairs of Nb conspire to induce long-range triplet (LRT) superconductivity in the ferromagnet. Surprisingly, the LRT correlations emerge in highly localized (sub-80 nm) channels at the rim of the ferromagnet, despite its trivial band structure. We show that these robust rim currents arise from the magnetization texture acting as an effective spin–orbit coupling, which results in spin accumulation at the bilayer–vacuum boundary. Lastly, we demonstrate that by altering the spin texture of a single ferromagnet, both 0 and π channels can be realized in the same device.


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Ministry reportingYes

Reporting Year2022

JUFO rating3

Last updated on 2024-15-06 at 01:46