Large Anomalous Hall Effect and Slow Relaxation of the Magnetization in Fe1/3TaS2
Large Anomalous Hall Effect and Slow Relaxation of the Magnetization in Fe1/3TaS2
复制标题
DOI：
10.1021/acs.jpcc.0c07711
复制
发表时间：
2020-11-12
影响因子：
3.7
通讯作者：
Ebert, Hubert
中科院分区：
文献类型：
--
作者：
Mangelsen, Sebastian;Hansen, Julian;Ebert, Hubert
在此，我们对插入铁的过渡金属二硫属化物 Fe1/3TaS2 的磁和磁输运特性进行了广泛的研究。通过改进的化学气相传输方案制备了高质量的单晶。该晶体在居里温度 T-C = 38 K 处表现出急剧的铁磁有序转变，具有 79 T 的非常高的各向异性场，并且在低于 T-C 时磁化强度缓慢弛豫。铁磁态中与场相关的霍尔电阻率不遵循 M(H) 曲线，这可以用异常大的负磁阻来解释，在 9 T 的场下达到 -72% 的值。霍尔效应和居里温度附近的磁阻对温度和场的巨大依赖性表明载流子与热致自旋波动之间存在强烈的相互作用。
Herein, we present an extensive study of the magnetic and magnetotransport properties of iron-inserted transition-metal dichalcogenide Fe1/3TaS2. High-quality single crystals were prepared by an improved protocol for chemical vapor transport. The crystals show a sharp ferromagnetic order transition at the Curie temperature T-C = 38 K, a very high anisotropy field of 79 T, and slow relaxation of the magnetization below T-C. The field-dependent Hall resistivity in the ferromagnetic regime does not follow the M(H) curves, which could be explained by the unusual large negative magnetoresistance that reaches values of up to -72% under a field of 9 T. The large temperature and field dependence of the Hall effect and magnetoresistance near the Curie temperature point to a strong interaction of the charge carriers with thermally induced fluctuations of the spins.