论文标题
熵降低磁性记忆元素中的保留时间：迈耶 - 内尔德尔补偿规则的案例
Entropy-reduced retention times in magnetic memory elements: A case of the Meyer-Neldel Compensation Rule
论文作者
论文摘要
我们计算在热激活的磁化逆转之间的平均等待时间，其参数类似于磁性随机访问记忆中使用的游离COFEB层。通过结合Langer的理论和前进通量采样模拟，我们表明Arrhenius Prefactor可以将值采用的值高达10 $^{21} $ Hz，超出了通常假定的10 $^{9} $ Hz的值，其数量级，并且作为材料参数的函数而变化很大。我们表明，预制器的行为就像激活能量的指数，这突出了迈耶·奈尔德尔补偿规则的情况。这表明在此类磁性存储元素中使用无障碍的预取代理人对信息保留时间进行建模是没有道理的。
We compute mean waiting times between thermally-activated magnetization reversals in a nanodisk with parameters similar to a free CoFeB layer used in magnetic random access memories. By combining Langer's theory and forward flux sampling simulations, we show that the Arrhenius prefactor can take values up to 10$^{21}$ Hz, orders of magnitude beyond the value of 10$^{9}$ Hz typically assumed, and varies drastically as a function of material parameters. We show that the prefactor behaves like an exponential of the activation energy, which highlights a case of the Meyer-Neldel compensation rule. This suggests that modeling information retention times with a barrier-independent prefactor in such magnetic storage elements is not justified.
