Low-temperature charge ordering in Sr14Cu24O41

被引：44

作者：

Cox, DE ^{[1
]}

Iglesias, T

Hirota, K

Shirane, G

Matsuda, M

Motoyama, N

Eisaki, H

Uchida, S

机构：

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

[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 35101, Japan

[3] Univ Tokyo, Dept Supercond, Bunkyo Ku, Tokyo 113, Japan

[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 98077, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.57.10750

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Synchrotron x-ray measurements were made between 20-300 K on single crystals of Sr14Cu24O41 which has a quasi-one-dimensional chain and ladder structure, in order to investigate possible charge-ordering effects in the CuO2 chains as indicated by recent NMR studies. At 50 K a few very weak satellite peaks were observed at (00l) positions corresponding to a fourfold increase in periodicity along the chain axis. These peaks decreased in intensity with increasing temperature, and eventually disappeared close to 300 K. The observations were interpreted in terms of a charge-ordered model involving both dimerization between two next-nearest-neighbor Cu2+ ions surrounding a Cu3+ ion on a Zhang-Rice singlet site, and dimerization between nearest-neighbor Cu2+ ions. [S0163-1829(98)06617-X].

引用

收藏

页码：10750 / 10754

页数：5

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