Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments
We report on the determination of the spin Hall angle in ultra-clean, defect-reduced epitaxial Pt films. By applying vector network analyzer ferromagnetic resonance spectroscopy to a series of single crystalline Fe (12 nm) /Pt ( t _Pt ) bilayers we determine the real part of the spin mixing conducta...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/aabc46 |
| _version_ | 1797750666587799552 |
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| author | Sascha Keller Laura Mihalceanu Matthias R Schweizer Philipp Lang Björn Heinz Moritz Geilen Thomas Brächer Philipp Pirro Thomas Meyer Andres Conca Dimitrios Karfaridis George Vourlias Thomas Kehagias Burkard Hillebrands Evangelos Th Papaioannou |
| author_facet | Sascha Keller Laura Mihalceanu Matthias R Schweizer Philipp Lang Björn Heinz Moritz Geilen Thomas Brächer Philipp Pirro Thomas Meyer Andres Conca Dimitrios Karfaridis George Vourlias Thomas Kehagias Burkard Hillebrands Evangelos Th Papaioannou |
| author_sort | Sascha Keller |
| collection | DOAJ |
| description | We report on the determination of the spin Hall angle in ultra-clean, defect-reduced epitaxial Pt films. By applying vector network analyzer ferromagnetic resonance spectroscopy to a series of single crystalline Fe (12 nm) /Pt ( t _Pt ) bilayers we determine the real part of the spin mixing conductance (4.4 ± 0.2) × 10 ^19 m ^−2 and reveal a very small spin diffusion length in the epitaxial Pt (1.1 ± 0.1) nm film. We investigate the spin pumping and ISHE in a stripe microstucture excited by a microwave coplanar waveguide antenna. By using their different angular dependencies, we distinguish between spin rectification effects and the inverse spin Hall effect. The relatively large value of the spin Hall angle (5.7 ± 1.4)% shows that ultra-clean e-beam evaporated non-magnetic materials can also have a comparable spin-to-charge current conversion efficiency as sputtered high resistivity layers. |
| first_indexed | 2024-03-12T16:37:09Z |
| format | Article |
| id | doaj.art-186e52da4e8a48489258678b07874239 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:09Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-186e52da4e8a48489258678b078742392023-08-08T14:49:21ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120505300210.1088/1367-2630/aabc46Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experimentsSascha Keller0Laura Mihalceanu1Matthias R Schweizer2Philipp Lang3Björn Heinz4Moritz Geilen5Thomas Brächer6Philipp Pirro7Thomas Meyer8Andres Conca9Dimitrios Karfaridis10George Vourlias11Thomas Kehagias12Burkard Hillebrands13Evangelos Th Papaioannou14Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyPhysics Department, Aristotle University of Thessaloniki , 54124 Thessaloniki, GreecePhysics Department, Aristotle University of Thessaloniki , 54124 Thessaloniki, GreecePhysics Department, Aristotle University of Thessaloniki , 54124 Thessaloniki, GreeceFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyFachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 56, D-67663 Kaiserslautern, GermanyWe report on the determination of the spin Hall angle in ultra-clean, defect-reduced epitaxial Pt films. By applying vector network analyzer ferromagnetic resonance spectroscopy to a series of single crystalline Fe (12 nm) /Pt ( t _Pt ) bilayers we determine the real part of the spin mixing conductance (4.4 ± 0.2) × 10 ^19 m ^−2 and reveal a very small spin diffusion length in the epitaxial Pt (1.1 ± 0.1) nm film. We investigate the spin pumping and ISHE in a stripe microstucture excited by a microwave coplanar waveguide antenna. By using their different angular dependencies, we distinguish between spin rectification effects and the inverse spin Hall effect. The relatively large value of the spin Hall angle (5.7 ± 1.4)% shows that ultra-clean e-beam evaporated non-magnetic materials can also have a comparable spin-to-charge current conversion efficiency as sputtered high resistivity layers.https://doi.org/10.1088/1367-2630/aabc46spin pumpinginverse spin Hall effectmolecular beam epitaxyinterface engineeringmetallic spintronicsthin films |
| spellingShingle | Sascha Keller Laura Mihalceanu Matthias R Schweizer Philipp Lang Björn Heinz Moritz Geilen Thomas Brächer Philipp Pirro Thomas Meyer Andres Conca Dimitrios Karfaridis George Vourlias Thomas Kehagias Burkard Hillebrands Evangelos Th Papaioannou Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments New Journal of Physics spin pumping inverse spin Hall effect molecular beam epitaxy interface engineering metallic spintronics thin films |
| title | Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments |
| title_full | Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments |
| title_fullStr | Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments |
| title_full_unstemmed | Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments |
| title_short | Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments |
| title_sort | determination of the spin hall angle in single crystalline pt films from spin pumping experiments |
| topic | spin pumping inverse spin Hall effect molecular beam epitaxy interface engineering metallic spintronics thin films |
| url | https://doi.org/10.1088/1367-2630/aabc46 |
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