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Quadrupole Order in the Frustrated Pyrochlore Tb2+xTi2-xO7+y
Published
Author(s)
H. Takatsu, S. Onoda, S. Kittaka, A. Kasahara, Y. Kono, T. Sakakibara, Y. Kato, B. Fak, J. Ollivier, Jeffrey W. Lynn, T. Taniguchi, H. Kadowaki
Abstract
A hidden order that emerges in the frustrated pyrochlore Tb2+xTi2-xO7+y with X = 0.005 > xc is studied from specific heat and magnetization experiments on a high-quality single crystal, as well as neutron scattering. Semi-quantitative3 analyses based on a pseudospin-1/2 pyrochlore Hamiltonian for ionic non-Kramers magnetic doublets indicate that it is a long-range of an electric quadrupole. These results suggest the existence for a Higgs phase located close to a U(1) quantum spin-liquid phase of the non-Kramers pyrochlore model.
Takatsu, H.
, Onoda, S.
, Kittaka, S.
, Kasahara, A.
, Kono, Y.
, Sakakibara, T.
, Kato, Y.
, Fak, B.
, Ollivier, J.
, Lynn, J.
, Taniguchi, T.
and Kadowaki, H.
(2016),
Quadrupole Order in the Frustrated Pyrochlore Tb<sub>2+x</sub>Ti<sub>2-x</sub>O<sub>7+y</sub>, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918828
(Accessed October 13, 2025)