Charge-to-spin conversion in Bi/Ag bilayer investigated by spin-torque ferromagnetic resonance
Source abstract
Abstract
The charge-to-spin conversion in Bi/Ag bilayer is studied by spin-torque ferromagnetic resonance experimentally. Fe and permalloy layers sandwich the Bi/Ag bilayer in a multilayer structure, which allows the injection of spin current generated in the Bi/Ag bilayer into the two ferromagnetic layers from opposite directions. The spin Hall effect and the Rashba–Edelstein effect in Bi/Ag are expected to show qualitatively different spin-torque ferromagnetic resonance signals in such a setup. The results show the dominant contribution from the spin Hall effect rather than the Rashba–Edelstein effect, consistent with our recent finding of the spin-to-charge conversion in Bi/Ag bilayer (Shen et al., 2021).
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic properties of thin films · Quantum and electron transport phenomena · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. Current-driven spin torque induced by the Rashba effect in a ferromagnetic metal layer10.1038/nmat2613 ↗
2. Perpendicular switching of a single ferromagnetic layer induced by in-plane current injection10.1038/nature10309 ↗
3. Antidamping-torque-induced switching in biaxial antiferromagnetic insulators10.1103/PhysRevLett.120.207204 ↗
4. Spin hall effect10.1103/PhysRevLett.83.1834 ↗
5. Spin hall effect in the presence of spin diffusion10.1103/PhysRevLett.85.393 ↗
6. Extrinsic spin hall effects measured with lateral spin valve structures10.1103/PhysRevB.89.054401 ↗
7. Conversion of spin current into charge current at room temperature: Inverse spin-hall effect10.1063/1.2199473 ↗
8. Spin polarization of conduction electrons induced by electric current in two-dimensional asymmetric electron systems10.1016/0038-1098(90)90963-C ↗
9. New perspectives for rashba spin–orbit coupling10.1038/nmat4360 ↗
10. Spin-to-charge conversion using rashba coupling at the interface between non-magnetic materials10.1038/ncomms3944 ↗
11. Spin-to-charge conversion in Ag/Bi bilayer revisited10.1103/PhysRevLett.126.197201 ↗
12. Spin pumping and inverse rashba-edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb10.1063/1.4915479 ↗
13. Interface-driven spin-torque ferromagnetic resonance by rashba coupling at the interface between nonmagnetic materials10.1103/PhysRevB.93.224419 ↗
14. Control of terahertz emission by ultrafast spin-charge current conversion at rashba interfaces10.1103/PhysRevLett.120.207207 ↗
15. Highly efficient and tunable spin-to-charge conversion through rashba coupling at oxide interfaces10.1038/nmat4726 ↗
16. Rashba-edelstein magnetoresistance in metallic heterostructures10.1103/PhysRevLett.117.116602 ↗
17. Enhanced magneto-optical Kerr effects in Py/Ag/Bi trilayers10.1088/1361-6463/aa69f9 ↗
18. Charge-to-spin conversion and spin diffusion in Bi/Ag bilayers observed by spin-polarized positron beam10.1103/PhysRevLett.114.166602 ↗
19. Control of the spin to charge conversion using the inverse rashba-edelstein effect10.1063/1.4919129 ↗
20. Spin-torque ferromagnetic resonance induced by the spin hall effect10.1103/PhysRevLett.106.036601 ↗
21. Spin torque switching with the giant spin hall effect of tantalum10.1126/science.1218197 ↗
22. Current-driven excitation of magnetic multilayers10.1016/0304-8853(96)00062-5 ↗
23. Interpretation of anomalous larmor frequencies in ferromagnetic resonance experiment10.1103/PhysRev.71.270.2 ↗
24. On the theory of ferromagnetic resonance absorption10.1103/PhysRev.73.155 ↗
25. Role of interfacial oxidation in the generation of spin-orbit torques10.1103/PhysRevB.102.024405 ↗