Oscillatory exchange coupling and giant positive magnetoresistance in TiN/Fe3O4 superlattices

被引：50

作者：

Orozco, A ^{[1
]}

Ogale, SB

Li, YH

Fournier, P

Li, E

Asano, H

Smolyaninova, V

Greene, RL

Sharma, RP

Ramesh, R

Venkatesan, T

机构：

[1] Univ Maryland, NSF, MRSEC Oxides Surfaces & Probes, College Pk, MD 20742 USA

[2] Univ Maryland, Dept Phys, Ctr Superconduct Res, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.83.1680

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Oscillatory exchange coupling is observed in TiN/Fe3O4 superlattices over length scales comparable to metallic superlattices. However, the strength of the coupling is almost an order of magnitude stronger than that commonly observed in metallic superlattices. In addition, a unique positive magnetoresistance effect is also seen. These observations an discussed in terms of the carrier confinement effects caused by the half metallicity of the magnetic layers.

引用

页码：1680 / 1683

页数：4

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