Anomalous ferromagnetic spin fluctuations in an antiferromagnetic insulator Pr1-xCaxMnO3

被引：54

作者：

Kajimoto, R ^{[1
]}

Kakeshita, T

Oohara, Y

Yoshizawa, H

Tomioka, Y

Tokura, Y

机构：

[1] Univ Tokyo, ISSP, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

[2] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 3058562, Japan

[3] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.58.R11837

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high temperature paramagnetic state in an antiferromagnetic insulator Pr1-xCaxMnO3 is characterized by the ferromagnetic spin fluctuations with an anomalously small energy scale. The ferromagnetic fluctuations show a precipitous decrease of the intensity at the charge ordering temperature T-CO, but persist below T-CO, and vanish at the antiferromagnetic transition temperature T-N. These results demonstrate the importance of the spin ordering for the complete switching of the ferromagnetic fluctuation in doped manganites. [S0163-1829(98)51842-5].

引用

页码：R11837 / R11840

页数：4