Magnetic order in the hole-doped two-leg ladder compound Sr2.5Ca11.5Cu24O41:: Evidence from Cu-NMR and -NQR studies on a single crystal

被引：42

作者：

Ohsugi, S

Magishi, K

Matsumoto, S

Kitaoka, Y ^{[1
]}

Nagata, T

Akimitsu, J

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Phys Sci, Toyonaka, Osaka 5608531, Japan

[2] Aoyama Gakuin Univ, Dept Phys, Setagaya Ku, Tokyo 1570071, Japan

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.82.4715

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report from Cu-NQR and -NMR experiments that hole-doped two-leg ladder compound Sr-2.5- Ca11.5Cu24O41 comprising Cu2O3 ladders and CuO2 chains reveals three-dimensional (3D) magnetic order below T-M = 2.2K. We found that small moments similar to 0.02 mu(B) are spontaneously ordered on the ladders, whereas large moments similar to 0.56 mu(B) are on the magnetic Cu sites occupying about one-fourth of the chain Cu sites. It is suggested that this 3D magnetic order is a cooperative phenomenon driven by the formation of pinned charge density wave-like state on the ladders which the optical conductivity measurement has clarified. [S0031-9007(99)09206-6].

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页码：4715 / 4718

页数：4

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