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)

作　　者：陈卫平[1] 冯尚申[1] 焦正宽[1,2] 

机构地区：[1]浙江台州学院物理系 [2]浙江大学物理系,杭州310027

出　　处：《物理学报》2003年第12期3176-3180,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 2 740 70 );国家重点基础研究发展规划 (批准号 :G19990 64 6 0 2 )资助的课题~~

摘　　要：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.

关 键 词：霍尔效应 自旋相关散射 特征磁场 金属颗粒膜 磁控溅射法 霍尔系数 霍尔电压 巨磁电阻效应 

分 类 号：O484[理学—固体物理]