Visualization of charge ordering in a half-doped manganite by an electrostatic potential analysis

被引：14

作者：

Kato, K. ^{[1
]}

Moritomo, Y. ^{[2
]}

Takata, M. ^{[1
,3
]}

Tanaka, H. ^{[4
]}

Hamada, N. ^{[5
]}

机构：

[1] RIKEN, SPring Ctr 8, Wako, Saitama 6795148, Japan

[2] Univ Tsukuba, Dept Phys, Tsukuba, Ibaraki 3058571, Japan

[3] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan

[4] Shimane Univ, Dept Mat Sci, Shimane 6908504, Japan

[5] Tokyo Univ Sci, Fac Sci & Technol, Noda, Chiba 2788510, Japan

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.77.081101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have experimentally investigated the charge density distribution and the electrostatic potential for a charge-ordering doped manganite, Nd1/2Sr1/2MnO3. In the charge-ordered state, we observed a zigzag pattern of the charge density within the (010) plane. Judging from the MnO6 distortion, we ascribed the pattern to the bonding electron in the p(x(y))-d(x2-y2) hybridized state, not to the so-called d(3x)(2)-r(2)/d(3y2-r2) orbital ordering. We further calculated the electrostatic potential U(r) from the charge density and the atomic positions, which clearly indicates the checkerboard-type charge disproportionation within the (010) plane.

引用

页数：4