TY - JOUR
T1 - Reentrant Phase Diagram of Yb2Ti2 O7 in a 〈111〉 Magnetic Field
AU - Scheie, A.
AU - Kindervater, J.
AU - Säubert, S.
AU - Duvinage, C.
AU - Pfleiderer, C.
AU - Changlani, H. J.
AU - Zhang, S.
AU - Harriger, L.
AU - Arpino, K.
AU - Koohpayeh, S. M.
AU - Tchernyshyov, O.
AU - Broholm, C.
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/9/21
Y1 - 2017/9/21
N2 - We present a magnetic 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 0.65 T. 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.
AB - We present a magnetic 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 0.65 T. 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.
UR - http://www.scopus.com/inward/record.url?scp=85030177922&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.119.127201
DO - 10.1103/PhysRevLett.119.127201
M3 - Article
C2 - 29341662
AN - SCOPUS:85030177922
SN - 0031-9007
VL - 119
JO - Physical Review Letters
JF - Physical Review Letters
IS - 12
M1 - 127201
ER -