Power-law spin correlations in the pyrochlore antiferromagnet Tb&lt;sub&gt;2&lt;/sub&gt;Ti&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt;

Fennell, T.; Kenzelmann, M.; Roessli, B.; Haas, M.K.; Cava, R.J.

doi:10.1103/PhysRevLett.109.017201

Power-law spin correlations in the pyrochlore antiferromagnet Tb₂Ti₂O₇

Fennell T, Kenzelmann M, Roessli B, Haas MK & Cava RJ

Citation

Fennell, T., Kenzelmann, M., Roessli, B., Haas, M. K., & Cava, R. J. (2012). Power-law spin correlations in the pyrochlore antiferromagnet Tb₂Ti₂O₇. Physical Review Letters, 109(1), 017201 (5 pp.). https://doi.org/10.1103/PhysRevLett.109.017201

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:12561

We investigate the low-temperature state of the rare-earth pyrochlore Tb₂Ti₂O₇ using polarized neutron scattering. Tb₂Ti₂O₇ is often described as an antiferromagnetic spin liquid with spin correlations extending over lengths comparable to individual tetrahedra of the pyrochlore lattice. We confirm this picture at 20 K but find that at 0.05 K the data contain evidence of pinch-point scattering, suggesting that the low temperature state of Tb₂Ti₂O₇ has power-law spin correlations.