Giant Hall effect in Co-SiO2 nanocomposites

被引：37

作者：

Denardin, JC

Pakhomov, AB

Knobel, M

Liu, H

Zhang, XX

机构：

[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, UNICAMP, BR-13083970 Campinas, SP, Brazil

[2] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 14期

关键词：

D O I：

10.1088/0953-8984/12/14/315

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Measurements of both the ordinary and extraordinary components of the Hall effect in co-sputtered granular magnetic CoSiO2 nanocomposites are presented. The experiments were done in the temperature range 5-300 K, and fields up to 7 T. Both components show a large enhancement when the metal volume fraction is reduced to the metal-insulator transition. However the enhancement of the ordinary Hall effect is much weaker than that of the extraordinary one. We discuss the implications of this observation for understanding of the giant Hall effect.

引用

页码：3397 / 3399

页数：3

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