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arXiv · 1101.2654

Absence of static magnetic order in lightly-doped Ti1-xScxOCl down to 1.7 K

A. A. Aczel·G. J. MacDougall·F. L. Ning·J. A. Rodriguez·S. R. Saha·F. C. Chou·T. Imai·G. M. Luke
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Abstract

Impurity-induced magnetic order has been observed in many quasi-1D systems including doped variants of the spin-Peierls system CuGeO3. TiOCl is another quasi-1D quantum magnet with a spin-Peierls ground state, and the magnetic Ti sites of this system can be doped with non-magnetic Sc. To investigate the role of non-magnetic impurities in this system, we have performed both zero field and longitudinal field muSR experiments on polycrystalline Ti1-xScxOCl samples with x = 0, 0.01, and 0.03. We verified that TiOCl has a non-magnetic ground state, and we found no evidence for spin freezing or magnetic ordering in the lightly-doped Sc samples down to 1.7 K. Our results instead suggest that these systems remain non-magnetic up to the x = 0.03 Sc doping level.

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A. A. Aczel, G. J. MacDougall, F. L. Ning, J. A. Rodriguez, S. R. Saha, F. C. Chou, T. Imai, G. M. Luke. 2011-01-13. Absence of static magnetic order in lightly-doped Ti1-xScxOCl down to 1.7 K. https://doi.org/10.1103/physrevb.83.134411

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