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Reentrant Phase Diagram of $\rm{Yb 2Ti 2O 7}$ in $\langle 111 \rangle$ Magnetic Field by Scheie, A.; Kindervater, J.; Säubert, S.; Duvinage, C.; Pfleiderer, C.; Changlani, H. J.; Zhang, S.; Harriger, L.; Arpino, K.; Koohpayeh, S. M.; Tchernyshyov, O.; Broholm, C. is a scholarly article available to read on EtoBox.

What is Reentrant Phase Diagram of $\rm{Yb 2Ti 2O 7}$ in $\langle 111 \rangle$ Magnetic Field about?

We present a magnetic phase diagram of rare-earth pyrochlore $\rm{Yb_2Ti_2O_7}$ in a $\langle 111 \rangle$ magnetic field. Using heat capacity, magnetization, and neutron scattering data, we show an unusual field-dependence of a first-order phase boundary, wherein a small applied field increases the ordering temperature. The zero-field ground state has ferromagnetic domains, while the spins polarize along $\langle 111 \rangle$ above 0.65T. A classical Monte Carlo analysis of published Hamiltonians does account for the critical field in the low T limit. However, this analysis fails to account for the large bulge in the reentrant phase diagram, suggesting that either long-range interactions or quantum fluctuations govern low field properties.

Author

Scheie, A.; Kindervater, J.; Säubert, S.; Duvinage, C.; Pfleiderer, C.; Changlani, H. J.; Zhang, S.; Harriger, L.; Arpino, K.; Koohpayeh, S. M.; Tchernyshyov, O.; Broholm, C.

Published

2017

Language

EN