Enhancement of magnetoresistance in spin frustrated (La,Sr)MnO3/LaFeO3 artificial lattices

被引：33

作者：

Tanaka, H ^{[1
]}

Kawai, T ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 112卷 / 04期

关键词：

magnetic films and multilayers; epitaxy; electronic transport; exchange and superexchange;

D O I：

10.1016/S0038-1098(99)00331-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have formed ferromagnetic-[(La0.8Sr0.2)MnO3]m/antiferromagnetic-[LaFeO3](n) superlattices with a stacking periodicity of 1 less than or equal to m less than or equal to 10 acid 1 less than or equal to n less than or equal to 3 unit cells. It has been observed that resistivity is increased and Curie temperature is suppressed from 250 to 130 K by increasing the antiferromagnetic layer. Metal-insulator transition systematically occurred in the series of the superlattices (m = 2) with increasing n from 1 to 3 unit cells. It is explained that spin fluctuation is induced by neighboring antiferromagnetic spin order. Their colossal magneto-resistance (CMR) effect is enhanced by up to 35% at the magnetic field of 1.0 T. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：201 / 205

页数：5

共 15 条

[1] CONSIDERATIONS ON DOUBLE EXCHANGE [J].