Exchange spin waves in thin films with gradient composition
arXiv:2203.05014 · doi:10.1103/PhysRevMaterials.6.064406
Abstract
We report investigation of ferromagnetic resonance phenomenon in ferromagnetic thin films with essentially non-uniform composition. Epitaxial Pd-Fe thin film with linear distribution of Fe content across the thickness is used as the model material. Anomalous perpendicular standing spin waves are observed and quantified using the collective dynamic equation. Numerical analysis yields the exchange stiffness constant for diluted Pd-Fe alloy ~Tnm and the ratio of the effective magnetization to the saturation magnetization . It is demonstrated that, overall, engineering of thin films with non-uniform composition across the thickness can be used for high-frequency or low-field magnonic operations using exchange spin waves.
arXiv comment8 pages, 7 figures
References in corpus (31)
- Strongly coupled magnons and cavity microwave photons
- Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
- The building blocks of magnonics
- High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids
- Roadmap on Spin-Wave Computing
- Entanglement-based single-shot detection of a single magnon with a superconducting qubit
- Bidirectional conversion between microwave and light via ferromagnetic magnons
- Magnon dark modes and gradient memory
- Subterahertz spin pumping from an insulating antiferromagnet
- Strong Coupling between Microwave Photons and Nanomagnet Magnons
- Integrated magnonic half-adder
- A magnonic directional coupler for integrated magnonic half-adders
- Strong magnon-photon coupling in ferromagnet-superconducting resonator thin-film devices
- Nanoscale neural network using non-linear spin-wave interference
- Gigahertz frequency antiferromagnetic resonance and strong magnon-magnon coupling in the layered crystal CrCl3
- Spin waves in coupled YIG/Co heterostructures
- Measurements of the exchange stiffness of YIG films by microwave resonance techniques
- Magnetic Josephson Junctions with Superconducting Interlayer for Cryogenic Memory
- Coherent spin pumping in a strongly coupled magnon-magnon hybrid system
- Spin-wave logic devices based on isotropic forward volume magneto-static waves
- Magnon based logic in a multi-terminal YIG/Pt nanostructure
- Ultra-strong photon-to-magnon coupling in multilayered heterostructures involving superconducting coherence via ferromagnetic layers
- Magnetization dynamics in proximity-coupled superconductor/ferromagnet/superconductor multilayers
- Strong asymmetry of microwave absorption by bi-layer conducting ferromagnetic films in the microstrip-line based broadband ferromagnetic resonance
- Approaching to the deep-strong photon-to-magnon coupling
- Giant perpendicular magnetic anisotropy in Ir/Co/Pt multilayers
- Dynamic pinning at a Py/Co interface measured using inductive magnetometry
- Possible evidence for spin-transfer torque induced by spin-triplet supercurrent
- Magnetic properties of thin epitaxial PdFe alloy films
- Interplay of magnetization dynamics with microwave waveguide at cryogenic temperatures
- Cherenkov radiation of spin waves by ultra-fast moving magnetic flux quanta