Spin pumping as a generic probe for linear spin fluctuations: demonstration with ferromagnetic and antiferromagnetic orders, metallic and insulating electrical states
arXiv:1901.03539 · doi:10.7567/1882-0786/aaf4b2
Abstract
We investigated spin injection by spin pumping from a spin-injector(NiFe) into a spin-sink to detect spin fluctuations in the spin-sink. By scanning the ordering-temperature of several magnetic transitions, we found that enhanced spin pumping due to spin fluctuations applies with several ordering states: ferromagnetic(Tb) and antiferromagnetic(NiO, NiFeOx, BiFeO3, exchange-biased and unbiased IrMn). Results also represent systematic experimental investigation supporting that the effect is independent of the metallic and insulating nature of the spin-sink, and is observed whether the spin current probe involves electronic or magnonic transport, facilitating advances in material characterization and engineering for spintronic applications.
References in corpus (16)
- Antiferromagnetic spintronics
- Nonlocal magnetization dynamics in ferromagnetic heterostructures
- Spin-Diffusion Lengths in Metals and Alloys, and Spin-Flipping at Metal/Metal Interfaces: an Experimentalist's Critical Review
- Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
- Enhancement of Thermally Injected Spin Current through an Antiferromagnetic Insulator
- Spin-current probe for phase transition in an insulator
- Enhanced spin pumping efficiency in antiferromagnetic IrMn thin films around the magnetic phase transition
- Tunable sign change of spin Hall magnetoresistance in Pt/NiO/YIG structures
- Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc
- Electrical Detection of Spin Backflow from an Antiferromagnetic Insulator/Y3Fe5O12 Interface
- Strong enhancement of the spin Hall effect by spin fluctuations near the Curie point of FexPt1-x alloys
- Spin pumping into superconductors: A new probe of spin dynamics in a superconducting thin film
- Spin Transport through the metallic antiferromagnet FeMn
- Finite-size scaling in thin Fe/Ir(100) layers
- Relaxation mechanism driven by spin angular momentum absorption throughout antiferromagnetic phase transition in NiFe surface oxides
- Unraveling the influence of electronic and magnonic spin current injection near the magnetic ordering transition of IrMn metallic antiferromagnets