论文标题
A.C.易感性作为低频磁化动力学的探针
A.C. susceptibility as a probe of low-frequency magnetic dynamics
论文作者
论文摘要
A.C.的实验技术易感性可以用作多种系统中磁化动力学的探针。它的使用仅限于低频制度，因此对相对缓慢的过程敏感。而不是测量单旋转的动力学，A.C。易感性可用于探测集体对象的动力学，例如铁磁体中的域壁或超导体中的涡流物质。在某些沮丧的系统（例如自旋玻璃）中，复杂的相互作用导致低频状态下波动的大量光谱重量，从而使A.C.敏感性可以发挥独特的作用。我们更广泛地回顾了技术和磁化动力学的理论，并提供了A.C.的应用。对各种实验情况的敏感性。
The experimental technique of a.c. susceptibility can be used as a probe of magnetic dynamics in a wide variety of systems. Its use is restricted to the low-frequency regime and thus is sensitive to relatively slow processes. Rather than measuring the dynamics of single spins, a.c. susceptibility can be used to probe the dynamics of collective objects, such as domain walls in ferromagnets or vortex matter in superconductors. In some frustrated systems, such as spin glasses, the complex interactions lead to substantial spectral weight of fluctuations in the low-frequency regime, and thus a.c. susceptibility can play a unique role. We review the theory underlying the technique and magnetic dynamics more generally and give applications of a.c. susceptibility to a wide variety of experimental situations.
