Direct observation of orbital order in manganites by MEM charge-density study

被引：86

作者：

Takata, M ^{[1
]}

Nishibori, E

Kato, K

Sakata, M

Moritoma, Y

机构：

[1] Shimane Univ, Dept Mat Sci, Matsue, Shimane 6908504, Japan

[2] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648601, Japan

[3] Nagoya Univ, Ctr Integrated Res Sci & Engn, Nagoya, Aichi 4648601, Japan

[4] JST, PRESTO, Kyoto, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1999年 / 68卷 / 07期

关键词：

layered manganites; A-type structure; charge density; maximum entropy method;

D O I：

10.1143/JPSJ.68.2190

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the charge-density distribution of an antiferromagnetic bi-layered manganite, NdSr2Mn2O7, by the maximum entropy method (MEM) using the synchrotron X-ray powder data. The magnetic structure below T-N = 150 K is known to be a layered-type (A-type). We have found a significant change of the electron distribution around the Mn site below T-N. Our observation indicates dx(2)-y(2)-orbital polarization in the A-type antiferromagnetic state.

引用

页码：2190 / 2193

页数：4

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