Phase transition and magnetic structure of pyrochlore oxide Cd2Os2O7

被引：6

作者：

Yamaura, J. ^{[1
]}

Ohsumi, H. ^{[2
]}

Sugimoto, K. ^{[3
]}

Tsutsui, S. ^{[3
]}

Yoda, Y. ^{[3
]}

Takeshita, S. ^{[2
]}

Tokuda, A. ^{[2
]}

Kitao, S.

Kurokuzu, M. ^{[4
]}

Seto, M. ^{[4
]}

Yamauchi, I. ^{[1
]}

Ohgushi, K. ^{[1
]}

Takigawa, M. ^{[1
]}

Arima, T. ^{[2
,5
]}

Hiroi, Z. ^{[1
]}

机构：

[1] Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan

[2] RIKEN, SPring Ctr 8, Sayo, Hyogo 6798148, Japan

[3] JASRI, SPring 8, Sayo, Hyogo 6795198, Japan

[4] Kyoto Univ, RRI, Sennan, Osaka 5900494, Japan

[5] Univ Tokyo, GSFS, Kashiwa, Chiba 2778561, Japan

来源：

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011) | 2012年 / 391卷

关键词：

SPRING-8;

D O I：

10.1088/1742-6596/391/1/012112

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 5d transition metal oxide Cd2Os2O7 having a pyrochlore lattice of Os atoms exhibits a metal-insulator transition with a magnetic ordering at 227 K, but the magnetic structure in the ordered state and the origin of the transition have not yet been specified. The commensurate magnetic reflection with the propagation vector k = (0, 0, 0) was first observed in the resonant X-ray scattering using a high-quality single crystal. We also clarified the only one kind of magnetic moment via the synchrotron radiation-based Mossbauer effect. We propose that a strong spin-orbit interaction is notably apparent in the spin arrangement and the insulating mechanism in this compound.

引用

页数：4

共 50 条

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