Nonlinear Stabilization of Non-Adiabatic Magnonic Dynamics
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866910238755520512 |
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| author | Tishin, A. M. |
| author_facet | Tishin, A. M. |
| contents | We propose a nonlinear magnonic platform for bounded nonadiabatic parametric excitation in nanoscale ferrite structures. The approach is based on the algorithm, where the non-adiabaticity parameter is interpreted as a local measure of the spectral-flow rate associated with, while the nonlinear frequency regulator U represents the anharmonic spectral detuning of the medium. Using Co doped yttrium iron garnet YIG Co as a representative material system, we analyze how nonlinear detuning suppresses uncontrolled parametric growth and drives the system toward a dynamically localized low-occupancy magnonic state. Numerical verification in truncated Fock bases shows that a finite regulator U can suppress leakage into higher-order modes and preserve bounded dynamics under non-adiabatic excitation. The experimentally reported absorbed energy density for ultrafast switching in YIG Co corresponds to an estimated switching energy of approximately 22 aJ for a cell, providing a physically relevant scale for low-energy resonant state formation. We further discuss the role of magnetic damping, exchange-gap confinement, and phonon transparency in maintaining coherent magnonic dynamics over multiple operation cycles. These results suggest that nonlinear self-limited non-adiabatic dynamics in ferrite nanostructures may provide a physical basis for low-energy wave-based information processing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_19647 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Nonlinear Stabilization of Non-Adiabatic Magnonic Dynamics Tishin, A. M. Mesoscale and Nanoscale Physics We propose a nonlinear magnonic platform for bounded nonadiabatic parametric excitation in nanoscale ferrite structures. The approach is based on the algorithm, where the non-adiabaticity parameter is interpreted as a local measure of the spectral-flow rate associated with, while the nonlinear frequency regulator U represents the anharmonic spectral detuning of the medium. Using Co doped yttrium iron garnet YIG Co as a representative material system, we analyze how nonlinear detuning suppresses uncontrolled parametric growth and drives the system toward a dynamically localized low-occupancy magnonic state. Numerical verification in truncated Fock bases shows that a finite regulator U can suppress leakage into higher-order modes and preserve bounded dynamics under non-adiabatic excitation. The experimentally reported absorbed energy density for ultrafast switching in YIG Co corresponds to an estimated switching energy of approximately 22 aJ for a cell, providing a physically relevant scale for low-energy resonant state formation. We further discuss the role of magnetic damping, exchange-gap confinement, and phonon transparency in maintaining coherent magnonic dynamics over multiple operation cycles. These results suggest that nonlinear self-limited non-adiabatic dynamics in ferrite nanostructures may provide a physical basis for low-energy wave-based information processing. |
| title | Nonlinear Stabilization of Non-Adiabatic Magnonic Dynamics |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2605.19647 |