Low-field behavior of an XY pyrochlore antiferromagnet: emergent clock anisotropies

V. S. Maryasin, M. E. Zhitomirsky, R. Moessner

Using $\mathrm{E}{\mathrm{r}}_2\mathrm{T}{\mathrm{i}}_2{\mathrm{O}}_7$ as a motivation, we investigate finite-field properties of $XY$ pyrochlore antiferromagnets. In addition to a fluctuation-induced six-fold anisotropy presen…