Stochasticity of the magnon parametron
Stochasticity of the magnon parametron
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磁振子参数的随机性
DOI：
10.1103/physrevb.105.054403
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发表时间：
2022
影响因子：
3.7
通讯作者：
Bauer GEW.
中科院分区：
文献类型：
--
作者：
Elyasi M;Saitoh E;Bauer GEW.
基于双稳系统(“伊辛自旋”)的非传统计算方案可能会取代传统的计算范例。“磁振子参子”是一种伊辛自旋，它是由于超过一定阈值的微波对铁磁粒子进行参数激发而形成的。这种伊辛自旋在出现高频电报噪声的第二阈值功率时变得不稳定。我们用均匀磁化进动的Suhl不稳定性解释了在室温下实验观察到的随机开关(“p位”特性)。
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.