Spin pumping in d -wave superconductor-ferromagnet hybrids
| Autor: | Javier E. Villegas, D. Sanchez-Manzano, V. Rouco, Myoung-Woo Yoo, Abdelmadjid Anane, K. Seurre, Jacobo Santamaria, Anke Sander, S. J. Carreira |
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| Přispěvatelé: | Unité mixte de physique CNRS/Thales (UMPhy CNRS/THALES), THALES [France]-Centre National de la Recherche Scientifique (CNRS), Departamento de Física de Materiales [Madrid], Universidad Autónoma de Madrid (UAM), Work supported by ERC grant N° 647100 'SUSPINTRONICS', French ANR grant ANR-15CE24-0008-01 'SUPERTRONICS', COST action 'Nanocohybri' and EU H2020 Marie Curie Actions Nº 890964 'SUPERMAGNONICS'., European Project: 647100,H2020,ERC-2014-CoG,SUSPINTRONICS(2015), Centre National de la Recherche Scientifique (CNRS)-THALES |
| Rok vydání: | 2021 |
| Předmět: |
[PHYS]Physics [physics]
Physics Superconductivity Condensed Matter - Materials Science Magnetization dynamics Spin pumping Condensed matter physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 01 natural sciences Ferromagnetic resonance 010305 fluids & plasmas Ferromagnetism Condensed Matter::Superconductivity 0103 physical sciences Density of states Quasiparticle Condensed Matter::Strongly Correlated Electrons 010306 general physics ComputingMilieux_MISCELLANEOUS Spin-½ |
| Zdroj: | Physical Review B Physical Review B, 2021, 104 (14), ⟨10.1103/PhysRevB.104.144428⟩ Physical Review B, American Physical Society, 2021, 104 (14), ⟨10.1103/PhysRevB.104.144428⟩ |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.104.144428 |
| Popis: | Spin-pumping across ferromagnet/superconductor (F/S) interfaces has attracted much attention lately. Yet the focus has been mainly on s-wave superconductors-based systems whereas (high-temperature) d-wave superconductors such as YBa2Cu3O7-d (YBCO) have received scarce attention despite their fundamental and technological interest. Here we use wideband ferromagnetic resonance to study spin-pumping effects in bilayers that combine a soft metallic Ni80Fe20 (Py) ferromagnet and YBCO. We evaluate the spin conductance in YBCO by analyzing the magnetization dynamics in Py. We find that the Gilbert damping exhibits a drastic drop as the heterostructures are cooled across the normal-superconducting transition and then, depending on the S/F interface morphology, either stays constant or shows a strong upturn. This unique behavior is explained considering quasiparticle density of states at the YBCO surface, and is a direct consequence of zero-gap nodes for particular directions in the momentum space. Besides showing the fingerprint of d-wave superconductivity in spin-pumping, our results demonstrate the potential of high-temperature superconductors for fine tuning of the magnetization dynamics in ferromagnets using k-space degrees of freedom of d-wave/F interfaces. Comment: 20 pages, 6 figures |
| Databáze: | OpenAIRE |
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