Lack of static lattice distortion in $Tb_2 Ti_2 O_7$

Details Lack of static lattice distortion in $Tb_2 Ti_2 O_7$ Lack of static lattice distortion in $Tb_2 Ti_2 O_7$

2006-09-06

arxiv.org/abs/cond-mat/0609125v3

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 5 figures, accepted for publication in J. Phys. Condens. Matter. (Proceedings of Highly Frustrated Magnetism 2006); C

Scientific paper

We investigated the possibility of temperature dependent lattice distortions in the pyrochlore compound Tb$_{2}$Ti$_{2}$O$_{7}$ by measuring the internal magnetic field distribution, using muon spin resonance, and comparing it to the susceptibility. The measurements are done at temperatures as low as 70 mK and external fields up to 6 kG. We find that the evolution of the width of the field distribution can be explained by spin susceptibility only, thus ruling out a temperature dependent hyperfine coupling. We conclude that lattice deformations are absent in Tb$_{2}$Ti$_{2}$O$_{7}$.

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