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首页> 外文期刊>Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties >Relations between the Parisi physical order parameter and ac magnetic susceptibility in spin glasses
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Relations between the Parisi physical order parameter and ac magnetic susceptibility in spin glasses

机译：自旋玻璃的帕里斯物理阶数参数与交流磁化率之间的关系

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摘要

The consequences of a hierarchical model for barrier heights between metastable states are explored. We show that the Parisi physical order parameter P(q) extracted from the equilibrium out-of-phase susceptibility, is consistent with previous dc measurement of P(q). The dynamic susceptibility chi "(omega, t) before and after a dc magnetic field change is obtained by introducing a reduction of barrier heights by the relative Zeeman energy change E-Z, the reduction increasing for increasing barrier height. This results in the correct frequency dependence for the observed jump in chi "(omega) upon a change in magnetic field. Measurement of these jumps over a wide range of waiting times serves as a vehicle for the determination of excitation barrier response to a magnetic field change. [References: 14]
机译：探索了亚稳态之间的势垒高度的层次模型的结果。我们表明，从平衡异相磁化率中提取的巴黎物理顺序参数P（q）与先前的P（q）直流测量值一致。通过引入相对塞曼能量变化EZ来降低势垒高度，可以得到直流磁场变化之前和之后的动态磁化率chi“（ω，t），该降低随着势垒高度的增加而增加。这导致了正确的频率依赖性观察到的“ chi”（ω）在磁场变化时的跃迁。在较大的等待时间范围内对这些跃变的测量可用作确定对磁场变化的励磁势垒响应的工具。 [参考：14]

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