Magnetoelastics of a spin liquid: X-ray diffraction studies of Tb 2Ti2O7 in pulsed magnetic fields

J. P.C. Ruff, Z. Islam, J. P. Clancy, K. A. Ross, H. Nojiri, Y. H. Matsuda, H. A. Dabkowska, A. D. Dabkowski, B. D. Gaulin

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Abstract

We report high resolution single crystal x-ray diffraction measurements of the frustrated pyrochlore magnet Tb2Ti2O7, collected using a novel low temperature pulsed magnet system. This instrument allows characterization of structural degrees of freedom to temperatures as low as 4.4 K, and in applied magnetic fields as large as 30 T. We show that Tb 2Ti2O7 manifests intriguing structural effects under the application of magnetic fields, including strongly anisotropic giant magnetostriction, a restoration of perfect pyrochlore symmetry in low magnetic fields, and ultimately a structural phase transition in high magnetic fields. It is suggested that the magnetoelastic coupling thus revealed plays a significant role in the spin liquid physics of Tb2Ti2O7 at low temperatures.

Original languageEnglish
Article number077203
JournalPhysical Review Letters
Volume105
Issue number7
DOIs
Publication statusPublished - 2010 Aug 13

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ruff, J. P. C., Islam, Z., Clancy, J. P., Ross, K. A., Nojiri, H., Matsuda, Y. H., Dabkowska, H. A., Dabkowski, A. D., & Gaulin, B. D. (2010). Magnetoelastics of a spin liquid: X-ray diffraction studies of Tb 2Ti2O7 in pulsed magnetic fields. Physical Review Letters, 105(7), [077203]. https://doi.org/10.1103/PhysRevLett.105.077203