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  Giant oscillatory Gilbert damping in superconductor/ferromagnet/superconductor junctions

Yao, Y., Cai, R., Yu, T., Ma, Y., Xing, W., Ji, Y., et al. (2021). Giant oscillatory Gilbert damping in superconductor/ferromagnet/superconductor junctions. Science Advances, 7(48): eabh3686. doi:10.1126/sciadv.abh3686.

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© The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.
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Supplementary Materials and Methods: Supplementary Materials and Methods, Figs. S1 to S11, References
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https://dx.doi.org/10.1126/sciadv.abh3686 (Verlagsversion)
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https://arxiv.org/abs/2111.03233 (Preprint)
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 Urheber:
Yao, Y.1, 2, Autor
Cai, R.1, 2, Autor
Yu, T.3, Autor           
Ma, Y.1, 2, Autor
Xing, W.1, 2, Autor
Ji, Y.1, 2, Autor
Xie, X.-C.1, 2, 4, 5, Autor
Yang, S.-H.6, Autor
Han, W.1, 2, Autor
Affiliations:
1International Center for Quantum Materials, School of Physics, Peking University, ou_persistent22              
2Collaborative Innovation Center of Quantum Matter, ou_persistent22              
3Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
4CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, ou_persistent22              
5Beijing Academy of Quantum Information Sciences, ou_persistent22              
6IBM Research–Almaden, ou_persistent22              

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 Zusammenfassung: Interfaces between materials with differently ordered phases present unique opportunities for exotic physical properties, especially the interplay between ferromagnetism and superconductivity in the ferromagnet/superconductor heterostructures. The investigation of zero- and π-junctions has been of particular interest for both fundamental physical science and emerging technologies. Here, we report the experimental observation of giant oscillatory Gilbert damping in the superconducting niobium/nickel-iron/niobium junctions with respect to the nickel-iron thickness. This observation suggests an unconventional spin pumping and relaxation via zero-energy Andreev bound states that exist not only in the niobium/nickel-iron/niobium π-junctions but also in the niobium/nickel-iron/niobium zero-junctions. Our findings could be important for further exploring the exotic physical properties of ferromagnet/superconductor heterostructures and potential applications of ferromagnet π-junctions in quantum computing, such as half-quantum flux qubits.

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Sprache(n): eng - English
 Datum: 2021-03-042021-10-062021-11-26
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1126/sciadv.abh3686
arXiv: 2111.03233
 Art des Abschluß: -

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Projektname : Y.Y., R.C., Y.M., W.X., Y.J., X.-C.X., and W.H. acknowledge the financial support from the National Basic Research Programs of China (no. 2019YFA0308401), National Natural Science Foundation of China (no. 11974025), Beijing Natural Science Foundation (no. 1192009), and the Strategic Priority Research Program of the Chinese Academy of Sciences (no. XDB28000000). T.Y. is financially supported by DFG Emmy Noether program (SE 2558/2-1).
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Titel: Science Advances
  Andere : Sci. Adv.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington : AAAS
Seiten: - Band / Heft: 7 (48) Artikelnummer: eabh3686 Start- / Endseite: - Identifikator: ISSN: 2375-2548
CoNE: https://pure.mpg.de/cone/journals/resource/2375-2548