Spin-dependent electronic transport in granular ferromagnets

被引：263

作者：

Milner, A

Gerber, A

Groisman, B

Karpovsky, M

Gladkikh, A

机构：

[1] School of Physics and Astronomy, Raymond and Beverly Sackler, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Ramat Aviv

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.76.475

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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-SiO2, Co-SiO2). Both systems demonstrate remarkably similar magnetoresistive behavior of comparable magnitude: negative isotropic magnetoresistance below the ferromagnet percolation threshold and the anisotropic magnetoresistance above.

引用

页码：475 / 478

页数：4

共 23 条

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