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arXiv · 1210.1428

Spin liquid correlations, anisotropic exchange and symmetry breaking in Tb2Ti2O7

Sylvain Petit·Pierre Bonville·Julien Robert·Claudia Decorse·Isabelle Mirebeau
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Abstract

We have studied the low energy spin dynamics between 4.6K and 0.07K in a Tb2Ti2O7 single crystal sample, by means of inelastic neutron scattering experiments. The spectra consist in a dual response, with a static and an inelastic contribution, showing striking Q-dependences. We propose an interpretation involving an anisotropic exchange interaction in combination with a breaking of the threefold symmetry at the rare earth site. Simulations of the Q-dependent scattering in the Random Phase Approximation account well for the inelastic response.

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Sylvain Petit, Pierre Bonville, Julien Robert, Claudia Decorse, Isabelle Mirebeau. 2012-10-04. Spin liquid correlations, anisotropic exchange and symmetry breaking in Tb2Ti2O7. https://doi.org/10.1103/physrevb.86.174403

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