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

S. Ohsugi, K. Magishi, S. Matsumoto, Y. Kitaoka, T. Nagata, J. Akimitsu

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Abstract

We report from Cu-NQR and -NMR experiments that hole-doped two-leg ladder compound Sr2.5-Ca11.5Cu24O41 comprising Cu2O3 ladders and CuO2 chains reveals three-dimensional (3D) magnetic order below TM = 2.2K. We found that small moments ˜0.02μB are spontaneously ordered on the ladders, whereas large moments ˜0.56μB 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.

Original languageEnglish
Pages (from-to)4715-4718
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number23
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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