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Reentrant Phase Diagram of $\rm{Yb_2Ti_2O_7}$ in $\langle 111 \rangle$ Magnetic Field
Reentrant Phase Diagram of $\rm{Yb_2Ti_2O_7}$ in $\langle 111 \rangle$ Magnetic Field
- Source :
- Phys. Rev. Lett. 119, 127201 (2017)
- Publication Year :
- 2017
-
Abstract
- 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.<br />Comment: 5 pages, 5 pages supplementary information
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 119, 127201 (2017)
- Publication Type :
- Report
- Accession number :
- edsarx.1703.06904
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.119.127201