Fe_(15.16)Ag_(84.84)金属颗粒膜自旋极化相关的霍尔效应研究

Spin polarized dependent Hall effect in metallic granular film Fe_(15.16)Ag_(84.84)

采用磁控溅射法分别在玻璃和单晶硅衬底上同时制备了Fe1 5 1 6 Ag84 84 金属颗粒膜样品 ,并对样品的霍尔效应和霍尔系数RH 随外加磁场H的变化关系进行了实验研究 .观察到霍尔电压UH 与外加磁场H的关系曲线呈现出自旋极化相关的反常现象 ,并与其磁电阻效应具有对应关系 .基于自旋相关的散射理论对此作出了合理的解释 .

We report the preparation of metallic granular film Fe15.16Ag84.84, grown on glass substrate and single crystals silicon substrate respectively, using magnetron sputtering method. The applied field H dependences of Hall effect and Hall coefficient R, in this specimen have been investigated. We observed the spin-dependent scattering anomalous phenomenon in the applied field H dependence of Hall voltage U-H I which suggests a corresponding relationship with the magnetoresistance. A proper explanation has been given based on spin-dependent scattering effect or tunneling effect.