Towards equilibrium in spin glasses (invited)
Towards equilibrium in spin glasses (invited)
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迈向旋转玻璃的平衡（特邀）
DOI：
10.1063/1.335101
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发表时间：
1985
影响因子：
3.2
通讯作者：
O. Beckman
中科院分区：
文献类型：
--
作者：
L. Lundgren;P. Nordblad;P. Svedlindh;O. Beckman
综述了自旋玻璃磁化率的新的非平衡特征。对零场冷却（ZFC）和场冷却（FC）磁化率随时间变化的实验观察表明，在相同的特征时间teq（T）之后获得相同的平衡值。对金属自旋玻璃的ZFC和交流磁化率测量明确地揭示了零场自旋玻璃态老化的存在。从这些测量探测老化过程的可能性进行了概述。零场状态的老化在特征时间teq（T）处结束，其中保持动态平衡的自旋玻璃态。
New nonequilibrium features of the magnetic susceptibility of spin glasses are reviewed. Experimental observations on the time variation of the zero‐field‐cooled (ZFC) and field‐cooled (FC) susceptibilities indicate that the same equilibrium value is obtained after the same characteristic time teq(T). ZFC and ac susceptibility measurements on metallic spin glasses unambiguously reveal the existence of aging of the zero‐field spin‐glass state. The possibility to probe the aging process from these measurements is outlined. The aging of the zero‐field state ends at the characteristic time teq(T), where a spin‐glass state at dynamic equilibrium is retained.