Stochasticity of the magnon parametron
Mehrdad Elyasi, Eiji Saitoh, Gerrit E. W. Bauer · Physical review. B./Physical review. B · 2022
Unconventional computing schemes based on bistable systems (``Ising spins'') may supersede conventional computing paradigms. The ``magnon parametron'' is an Ising spin that forms as a result of parametric excitation of a ferromagnetic particle by microwaves beyond a certain threshold. This Ising spin becomes unstable at a second threshold power at which a high-frequency telegraph noise emerges. We explain the experimentally observed stochastic switching (``p-bit'' characteristics) at room temperature by the Suhl instability of the uniform magnetization precession.