Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"magnonic"”.
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Nanostructured magnetic materials for integrated magnonic devices
… for various cutting-edge magnetic vis-à-vis magnonic applications, including on-chip reservoir computing, leveraging the unique magnetic vis-à-vis magnonic properties and their tuneability in these advanced materials/devices.
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Spin wave characterization in a 1D YIG magnonic crystal
… a one-dimensional (1D) yttrium iron garnet (YIG) magnonic crystal using time-resolved Brillouin light scattering (TR-BLS) measurements. Magnonic crystals are a promising candidate to aid in developing spin-based devices that exploit the spin of the electron since magnonic crystals can be used to …
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Novel Phenomena Induced by Magnon-Magnon and Magnon-Spin Coupling
Realization of novel topological phases in magnonic band structures represents a new opportunity for the development of spintronics and magnonics with low power consumption. While several approaches have been proposed for generating topological magnonic surface states, they usually require …
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Domain Wall Based Magnonics in Iron Garnet
Magnonic devices leverage magnons, quantized spin waves, as the mechanism to process and transfer information. In materials with low Gilbert damping, these spin wave-based systems enable ultra-fast operation while eliminating thermal heating and leakage currents inherent to conventional …
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Polyoxometalates and Block Copolymers: Templated Self-Assembly for Nanomaterials Applications
… as computing, catalysis, and energy conversion. Magnonic crystals are periodically ordered magnetic materials that are able to propagate spin waves, and are potential candidates for the next generation of computing. The research presented in this thesis explores templated self-assembly to create …
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Interactive Spin Dynamics in Magnon and Quantum Spin Systems
… centers in diamond, leading to the prosperity of magnonics, quantum sensing, and quantum information processing. As the understanding of dynamics in individual spin systems has deepened, recently there has been an increasing interest in the interactive dynamics within hybrid spin systems. This …
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Hybrid Magnonics in Antiferromagnets and Cavity Spintronic Devices
… systems. In this thesis, we develop hybrid magnonic systems with reduced complexity, improved scalability, and new functionality. In the first work, by utilizing van der Waals antiferromagnetic material CrCl3, we realize strong magnonmagnon coupling within a single material, simplifying the …
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Controlling and probing nonlinear collective mode dynamics in quantum materials
… upconversion process and identify correlated magnonic responses at both the sum and difference frequencies of the interacting modes. We achieve parametric amplification of magnon coherence by tuning the magnonic difference-frequency generation into resonance with a low-frequency magnon. …
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TIME RESOLVED PROBING OF MAGNETO-ELASTIC EXCITATIONS IN MAGNETIC MATERIALS
… at the condition of crossing of phononic and magnonic dispersions, at finite wavevector. With the aid of correlative ferromagnetic resonance measurements the boundary of applicability of the proposed experimental approach was established. In a second experiment, time-resolved magneto-optical …
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Strong coupling between microwave photons and nanomagnet magnons
… a guideline for further scaling down of the magnonic volume, which indicates that the number of spins for reaching strong coupling can be reduced to 104 with optimized material and resonator design. The realization of the coupled systems using metallic ferromagnets with conventional …
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Magneto-thermal Transport and Machine Learning-assisted Investigation of Magnetic Materials
… suggest that such dispersionless mode exist in magnonic bands under the framework of the Heisenberg spin model, few experiments indicate its existence. Not limited to these flat band effects, magnetic insulators can assume a variety of nontrivial topologies such as magnetic skyrmions. In this …
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Manipulation of spin textures by unconventional spin torques
… magnetization textures. We first show that magnonic spin currents due to spin wave propagation can couple to and drive magnetic domain walls in nanowires mainly with experiments, supported by micromagnetic simulations. This work highlights a route towards integrating domain walls and spin …
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Generalized phononic networks : of length scales, symmetry breaking and (non) locality : "controlling complexity through simplicity"
… scalar waves, such as photonic, plasmonic and magnonic structures and provides a promising route forward to the development of integrated structured material platforms that allow for the rational manipulation and interactions of phonons with other waves, such as phonons and spin waves.
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Probing the Behaviour of Antiferromagnets: Electric and Magnetic Measurements Across a Range of Length-scales
… explored. The SSE provides information into the magnonic excitations within the magnetic materials themselves instead. These effects were measured for a number of antiferromagnets, and compared to magnetostatic measurements. SMR is primarily dependent on the interfacial properties of adjacent …
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Current Induced Magnetisation Dynamics in Ferromagnetic Nanowires
… techniques for integration into, for example, magnonic nanostructures and devices. Understanding the magnetisation dynamics and spin wave modes in individual and arrays of magnetic nanowires and their dependence on the nanowire and lattice material and geometrical parameters is critical for the …
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Investigation of spin-caloric and spin-orbit torque materials by vectorial spin Seebeck measurements and an advanced x-ray magnetic reflectivity analysis
… charge carriers, the spin is transported by magnonic spin waves which propagate nearly free off dissipation and consequently are a candidate to reduce the steadily growing energy consumption of reading and writing information. The LSSE is commonly utilized to generate a pure spin current in a …