Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements
Here we report the comparison of the spin torque efficiencies measured by three different experimental schemes for Pt/Co/X stacks with material X (= Pt, Ta, Ti, Al, Au, Pd, and Ru. 7 materials). The first two spin torque efficiencies εDW(1) and εDW(2) are quantified by the measurement of spin-torque...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-05-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5006868 |
| _version_ | 1819087472012820480 |
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| author | Joo-Sung Kim Yune-Seok Nam Dae-Yun Kim Yong-Keun Park Min-Ho Park Sug-Bong Choe |
| author_facet | Joo-Sung Kim Yune-Seok Nam Dae-Yun Kim Yong-Keun Park Min-Ho Park Sug-Bong Choe |
| author_sort | Joo-Sung Kim |
| collection | DOAJ |
| description | Here we report the comparison of the spin torque efficiencies measured by three different experimental schemes for Pt/Co/X stacks with material X (= Pt, Ta, Ti, Al, Au, Pd, and Ru. 7 materials). The first two spin torque efficiencies εDW(1) and εDW(2) are quantified by the measurement of spin-torque-induced effective field for domain-wall depinning and creeping motions, respectively. The last one—longitudinal spin torque efficiency εL—is measured by harmonic signal measurement of the magnetization rotation with uniform magnetization configuration. The results confirm that, for all measured Pt/Co/X stacks, εDW(1) and εDW(2) are exactly consistent to each other and these two efficiencies are roughly proportional to εL with proportionality constant π/2, which comes from the integration over the domain-wall configuration. |
| first_indexed | 2024-12-21T21:36:41Z |
| format | Article |
| id | doaj.art-9fb901257c62438caddb089c437f1720 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T21:36:41Z |
| publishDate | 2018-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-9fb901257c62438caddb089c437f17202022-12-21T18:49:29ZengAIP Publishing LLCAIP Advances2158-32262018-05-0185056009056009-510.1063/1.5006868041892ADVComparison between spin-orbit torques measured by domain-wall motions and harmonic measurementsJoo-Sung Kim0Yune-Seok Nam1Dae-Yun Kim2Yong-Keun Park3Min-Ho Park4Sug-Bong Choe5Department of Physics and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of KoreaDepartment of Physics and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of KoreaDepartment of Physics and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of KoreaDepartment of Physics and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of KoreaDepartment of Physics and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of KoreaDepartment of Physics and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of KoreaHere we report the comparison of the spin torque efficiencies measured by three different experimental schemes for Pt/Co/X stacks with material X (= Pt, Ta, Ti, Al, Au, Pd, and Ru. 7 materials). The first two spin torque efficiencies εDW(1) and εDW(2) are quantified by the measurement of spin-torque-induced effective field for domain-wall depinning and creeping motions, respectively. The last one—longitudinal spin torque efficiency εL—is measured by harmonic signal measurement of the magnetization rotation with uniform magnetization configuration. The results confirm that, for all measured Pt/Co/X stacks, εDW(1) and εDW(2) are exactly consistent to each other and these two efficiencies are roughly proportional to εL with proportionality constant π/2, which comes from the integration over the domain-wall configuration.http://dx.doi.org/10.1063/1.5006868 |
| spellingShingle | Joo-Sung Kim Yune-Seok Nam Dae-Yun Kim Yong-Keun Park Min-Ho Park Sug-Bong Choe Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements AIP Advances |
| title | Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements |
| title_full | Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements |
| title_fullStr | Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements |
| title_full_unstemmed | Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements |
| title_short | Comparison between spin-orbit torques measured by domain-wall motions and harmonic measurements |
| title_sort | comparison between spin orbit torques measured by domain wall motions and harmonic measurements |
| url | http://dx.doi.org/10.1063/1.5006868 |
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