Antiferromagnetic short range order in a two-dimensional manganite exhibiting giant magnetoresistance

被引：223

作者：

Perring, TG

Aeppli, G

Moritomo, Y

Tokura, Y

机构：

[1] NEC CORP LTD, PRINCETON, NJ 08540 USA

[2] JRCAT, TSUKUBA, IBARAKI 305, JAPAN

[3] UNIV TOKYO, DEPT APPL PHYS, TOKYO 113, JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.78.3197

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The bilayer manganite La1.2Sr1.8Mn2O7 exhibits a transition between nearly insulating paramagnetic and metallic ferromagnetic states at T-C = 126 K. We use magnetic neutron scattering to show that the paramagnetic state contains long-lived antiferromagnetic clusters coexisting with ferromagnetic critical fluctuations. The principal implication is that at least in two dimensions, Anderson localization effects must also be taken into account in attempts to explain giant magnetoresistance in manganites.

引用

页码：3197 / 3200

页数：4

共 33 条

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