Direct observation of charge and orbital ordering by resonant X-ray scattering

被引：3

作者：

Murakami, Y ^{[1
]}

Hill, JP

Gibbs, D

Blume, M

Kawada, H

Koyama, I

Tanaka, M

Kawata, H

Arima, T

Moritomo, Y

Tokura, Y

Hirota, K

Endoh, Y

机构：

[1] High Energy Accelerator Res Org, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[2] Core Res Evolut Sci & Technol, Tsukuba, Ibaraki 3050047, Japan

[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[4] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

[5] Nagoya Univ, Ctr Intergrated Res Sci & Engn, Nagoya, Aichi 4640814, Japan

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

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

[8] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1999年 / 38卷

关键词：

charge-ordering; orbital-ordering; anomalous dispersion; resonant x-ray scattering;

D O I：

10.7567/JJAPS.38S1.360

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Charge and orbital ordering states of manganites have been observed directly by using synchrotron x-ray diffraction techniques. The alternating pattern of Mn3+ and Mn4+ in charge ordering state was elucidated by the anomalous dispersion method. The orbital ordering at Mn3+ sites is presented based on resonant x-ray scattering near Mn K-absorption edge. The scattering mechanism has been developed by considering the splitting of the Mn 4p levels due to the orbital ordering. The coupling among the charge, spin and orbital degrees of freedom is discussed.

引用

页码：360 / 364

页数：5

共 28 条

[1] A STRUCTURAL PHASE-TRANSITION INDUCED BY AN EXTERNAL MAGNETIC-FIELD [J].