Spin-dependent electronic transport in granular ferromagnets.
Spin-dependent electronic transport in granular ferromagnets.
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DOI：
10.1103/physrevlett.76.475
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发表时间：
1996-01
影响因子：
8.6
通讯作者：
A. Milner;Alexander Gerber;B. Groisman;M. Karpovsky;A. Gladkikh
中科院分区：
文献类型：
--
作者：
A. Milner;Alexander Gerber;B. Groisman;M. Karpovsky;A. Gladkikh
我们报告了两种颗粒铁磁系统中自旋相关电子传输的比较研究：铁磁金属（Ni-Ag，Co-Ag）和铁磁绝缘体（Ni-Si${\mathrm{O}}_{2}$，Co-Si${\mathrm{O}}_{2}$）。两个系统都表现出相当相似的磁阻行为：低于铁磁体渗透阈值的负各向同性磁阻和高于铁磁体渗透阈值的各向异性磁阻。
We report a comparative study of the spin-dependent electronic transport in two types of granular ferromagnetic systems: ferromagnet metal (Ni-Ag, Co-Ag) and ferromagnet insulator (Ni-Si${\mathrm{O}}_{2}$, Co-Si${\mathrm{O}}_{2}$). Both systems demonstrate remarkably similar magnetoresistive behavior of comparable magnitude: negative isotropic magnetoresistance below the ferromagnet percolation threshold and the anisotropic magnetoresistance above.