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Reentrant Phase Diagram of Yb2Ti2O7 in a [111] Magnetic Field

Published

Author(s)

A. Scheie, J. Kindervater, S. Saubert, C. Duvinage, C. Pfleiderer, H. J. Changlani, S. Zhang, Leland Harriger, K. Arpino, S. M. Koohpayeh, Collin L. Broholm

Abstract

We present a phase diagram of rare-earth pyrochlore Yb2Ti2O7 in a (111) 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 (111) above 0.65T. While a classical Monte Carlo analysis of published short-range-interaction Hamiltonians does account for the critical field in the low T limit, it fails to account for the lobed phase diagram, suggesting that either long-range interactions or quantum fluctuations govern low field properties.
Citation
Physical Review Letters
Volume
119
Issue
12

Keywords

rare earth, pyrochlore, neutron scattering, magnetism

Citation

Scheie, A. , Kindervater, J. , Saubert, S. , Duvinage, C. , Pfleiderer, C. , Changlani, H. , Zhang, S. , Harriger, L. , Arpino, K. , Koohpayeh, S. and Broholm, C. (2017), Reentrant Phase Diagram of Yb<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> in a [111] Magnetic Field, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=923115 (Accessed June 13, 2024)

Issues

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Created September 21, 2017, Updated October 12, 2021