Electrical and optical characterizations of spin-orbit torque
| Autor: | Armin Razavi, Tian Yu, Kang L. Wang, Hanshen Huang, Bingqian Dai, Quanjun Pan, Kin Fai Ellick Wong, Baoshan Cui, Su Kong Chong, Di Wu, Hao Wu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Kerr effect Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Insulator (electricity) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy Magnetization Ferromagnetism Ferrimagnetism Hall effect 0103 physical sciences Harmonic Astrophysics::Solar and Stellar Astrophysics Torque Condensed Matter::Strongly Correlated Electrons 0210 nano-technology |
| Zdroj: | Applied Physics Letters. 118:072405 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | To further reduce the energy consumption in spin–orbit torque devices, it is crucial to precisely quantify the spin–orbit torque (SOT) in different materials and structures. In this work, heavy metal/ferromagnet and heavy metal/ferrimagnet heterostructures are employed as the model systems to compare the electrical and optical methods for the SOT characterization, which are based on the anomalous Hall effect and the magneto-optical Kerr effect, respectively. It is found that both methods yield the consistent SOT strength for the current-driven magnetization switching measurements and the harmonic measurements. Our results suggest that the optical method is a feasible and reliable tool to investigate SOT, which is a powerful way to develop insulator-based magnetic systems in the future. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|