Structural aspects of the spin-ladder compound Sr14Cu24O41

被引：26

作者：

Etrillard, J

Braden, M

Gukasov, A

Ammerahl, U

Revcolevschi, A

机构：

[1] Univ Rennes 1, CNRS, UMR 6626, Grp Mat Condensee & Mat, F-35042 Rennes, France

[2] CE Saclay, CNRS, CEA, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

[3] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany

[4] Univ Paris 11, Lab Physico Chim Etat Solide, F-91405 Orsay, France

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 403卷 / 04期

关键词：

incommensurate composite crystal; spin-ladder; charge order; neutron scattering;

D O I：

10.1016/j.physc.2004.01.003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single crystal neutron scattering measurements have been performed on the spin-ladder compound Sr14Cu24O41 at 7 K. The incommensurate composite structure has been determined using the superspace group formalism. The low-temperature structure does not show a significant shift of the CuO2 chains along the c direction. In addition to the main and satellite nuclear reflections compatible with the incommensurate composite structure, new weak super-structure peaks at Q = (hkL(c)), with L-c = n +/- 0.20 (+/-0.01) have been observed. Their origin is probably due to the charge ordering associated to a three-dimensional configuration of the spin dimers in the CuO2 chain. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：290 / 296

页数：7

共 24 条

[11] A 4D structural study of a Ca-rich composite-type crystal [A2Cu2O3]7+δ[CuO2]10 with disorder phenomena in CuO2 sublattice [J].