Anomalous Hall effect in the Co-based Heusler compounds Co2FeSi and Co2FeAl
Anomalous Hall effect in the Co-based Heusler compounds Co2FeSi and Co2FeAl
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DOI：
10.1063/1.3678323
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发表时间：
2012-04-01
影响因子：
3.2
通讯作者：
Thomas, A.
中科院分区：
文献类型：
--
作者：
Imort, I. -M.;Thomas, P.;Thomas, A.
研究了Heusler化合物Co2FeSi和Co2FeAl中的反常霍尔效应(AHE)随退火温度的变化规律，以期对其产生的原因有一个全面的认识。我们证明了退火工艺对晶体质量的影响是调节电阻率Rho(Xx)和反常霍尔电阻率Rho(Ahe)的重要控制参数。用Rho(Xx)分析Rho(Ahe)的标度行为表明，温度相关的偏斜散射是两种Heusler化合物的主要机制。(C)2012年美国物理研究所。[DOI：10.1063/1.3678323]
The anomalous Hall effect (AHE) in the Heusler compounds Co2FeSi and Co2FeAl is studied in dependence of the annealing temperature to achieve a general comprehension of its origin. We have demonstrated that the crystal quality affected by annealing processes is a significant control parameter to tune the electrical resistivity rho(xx) as well as the anomalous Hall resistivity rho(ahe). Analyzing the scaling behavior of rho(ahe) in terms of rho(xx) points to a temperature-dependent skew scattering as the dominant mechanism in both Heusler compounds. (C) 2012 American Institute of Physics. [doi:10.1063/1.3678323]