| Literature DB >> 27284670 |
H Takatsu1,2, S Onoda3,4, S Kittaka5, A Kasahara5, Y Kono5, T Sakakibara5, Y Kato3,6, B Fåk7, J Ollivier7, J W Lynn8, T Taniguchi1, M Wakita1, H Kadowaki1.
Abstract
A hidden order that emerges in the frustrated pyrochlore Tb_{2+x}Ti_{2-x}O_{7+y} with T_{c}=0.53 K is studied using specific heat, magnetization, and neutron scattering experiments on a high-quality single crystal. Semiquantitative analyses based on a pseudospin-1/2 Hamiltonian for ionic non-Kramers magnetic doublets demonstrate that it is an ordered state of electric quadrupole moments. The elusive spin liquid state of the nominal Tb_{2}Ti_{2}O_{7} is most likely a U(1) quantum spin-liquid state.Entities:
Year: 2016 PMID： 27284670 DOI： 10.1103/PhysRevLett.116.217201
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161