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arXiv · 0712.2660

Easy-Axis Kagomé Antiferromagnet: Local-Probe Study of Nd$_3$Ga$_5$SiO$_{14}$

A. Zorko·F. Bert·P. Mendels·P. Bordet·P. Lejay·J. Robert
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Abstract

We report a local-probe investigation of the magnetically anisotropic kagomé compound Nd$_3$Ga$_5$SiO$_{14}$. Our zero-field $μ$SR results provide a direct evidence of a fluctuating collective paramagnetic state down to 60 mK, supported by a wipe-out of the Ga nuclear magnetic resonance (NMR) signal below 25 K. At 60 mK a dynamics crossover to a much more static state is observed by $μ$SR in magnetic fields above 0.5 T. Accordingly, the NMR signal is recovered at low $T$ above a threshold field, revealing a rapid temperature and field variation of the magnetic fluctuations.

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A. Zorko, F. Bert, P. Mendels, P. Bordet, P. Lejay, J. Robert. 2008-04-17. Easy-Axis Kagomé Antiferromagnet: Local-Probe Study of Nd$_3$Ga$_5$SiO$_{14}$. https://doi.org/10.1103/physrevlett.100.147201

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