Suppression of spin rectification effects in spin pumping experiments
Abstract Spin pumping (SP) is a well-established method to generate pure spin currents allowing efficient spin injection into metals and semiconductors avoiding the problem of impedance mismatch. However, to disentangle pure spin currents from parasitic effects due to spin rectification effects (SRE...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-04319-z |
| _version_ | 1798034550287237120 |
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| author | Sergi Martin-Rio Carlos Frontera Alberto Pomar Lluis Balcells Benjamin Martinez |
| author_facet | Sergi Martin-Rio Carlos Frontera Alberto Pomar Lluis Balcells Benjamin Martinez |
| author_sort | Sergi Martin-Rio |
| collection | DOAJ |
| description | Abstract Spin pumping (SP) is a well-established method to generate pure spin currents allowing efficient spin injection into metals and semiconductors avoiding the problem of impedance mismatch. However, to disentangle pure spin currents from parasitic effects due to spin rectification effects (SRE) is a difficult task that is seriously hampering further developments. Here we propose a simple method that allows suppressing SRE contribution to inverse spin Hall effect (ISHE) voltage signal avoiding long and tedious angle-dependent measurements. We show an experimental study in the well-known Py/Pt system by using a coplanar waveguide (CPW). Results obtained demonstrate that the sign and size of the measured transverse voltage signal depends on the width of the sample along the CPW active line. A progressive reduction of this width evidences that SRE contribution to the measured transverse voltage signal becomes negligibly small for sample width below 200 μm. A numerical solution of the Maxwell equations in the CPW-sample setup, by using the Landau-Lifshitz equation with the Gilbert damping term (LLG) as the constitutive equation of the media, and with the proper set of boundary conditions, confirms the obtained experimental results. |
| first_indexed | 2024-04-11T20:45:48Z |
| format | Article |
| id | doaj.art-f027c92aa80f42098d470c2e47f5371c |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T20:45:48Z |
| publishDate | 2022-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-f027c92aa80f42098d470c2e47f5371c2022-12-22T04:04:03ZengNature PortfolioScientific Reports2045-23222022-01-011211910.1038/s41598-021-04319-zSuppression of spin rectification effects in spin pumping experimentsSergi Martin-Rio0Carlos Frontera1Alberto Pomar2Lluis Balcells3Benjamin Martinez4Instituto de Ciencia de Materiales de Barcelona, ICMAB-CSICInstituto de Ciencia de Materiales de Barcelona, ICMAB-CSICInstituto de Ciencia de Materiales de Barcelona, ICMAB-CSICInstituto de Ciencia de Materiales de Barcelona, ICMAB-CSICInstituto de Ciencia de Materiales de Barcelona, ICMAB-CSICAbstract Spin pumping (SP) is a well-established method to generate pure spin currents allowing efficient spin injection into metals and semiconductors avoiding the problem of impedance mismatch. However, to disentangle pure spin currents from parasitic effects due to spin rectification effects (SRE) is a difficult task that is seriously hampering further developments. Here we propose a simple method that allows suppressing SRE contribution to inverse spin Hall effect (ISHE) voltage signal avoiding long and tedious angle-dependent measurements. We show an experimental study in the well-known Py/Pt system by using a coplanar waveguide (CPW). Results obtained demonstrate that the sign and size of the measured transverse voltage signal depends on the width of the sample along the CPW active line. A progressive reduction of this width evidences that SRE contribution to the measured transverse voltage signal becomes negligibly small for sample width below 200 μm. A numerical solution of the Maxwell equations in the CPW-sample setup, by using the Landau-Lifshitz equation with the Gilbert damping term (LLG) as the constitutive equation of the media, and with the proper set of boundary conditions, confirms the obtained experimental results.https://doi.org/10.1038/s41598-021-04319-z |
| spellingShingle | Sergi Martin-Rio Carlos Frontera Alberto Pomar Lluis Balcells Benjamin Martinez Suppression of spin rectification effects in spin pumping experiments Scientific Reports |
| title | Suppression of spin rectification effects in spin pumping experiments |
| title_full | Suppression of spin rectification effects in spin pumping experiments |
| title_fullStr | Suppression of spin rectification effects in spin pumping experiments |
| title_full_unstemmed | Suppression of spin rectification effects in spin pumping experiments |
| title_short | Suppression of spin rectification effects in spin pumping experiments |
| title_sort | suppression of spin rectification effects in spin pumping experiments |
| url | https://doi.org/10.1038/s41598-021-04319-z |
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