Successive structural transitions coupled with magnetotransport properties in LaSr2Mn2O7

被引：103

作者：

Kimura, T ^{[1
]}

Kumai, R

Tokura, Y

Li, JQ

Matsui, Y

机构：

[1] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 3050046, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1130033, Japan

[3] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.58.11081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature variations of the lattice structure and the magnetotransport properties have been investigated for a bilayered manganite crystal LaSr2Mn2O7 (hole-doping level of x=0.5) which undergoes the charge-ordering below similar to 210 K. The charge-ordered state associated with the d(3x2-r2)/d(3y2-r2) orbital ordering of Mn3+ appears to collapse again with decreasing temperature below 50-100 K, which was proved by both measurements of electron and x-ray diffraction. The structural change or the switching of the orbital state in this bilayered manganite manifests itself in temperature profiles of the charge-transport and magnetic properties. [S0163-1829(98)02641-1].

引用

页码：11081 / 11084

页数：4

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