Quadrupole Order in the Frustrated Pyrochlore Tb[2+x]Ti[2−x]O[7+y]
- Takatsu, H.
- Onoda, S.
- Kittaka, S.
- Kasahara, A.
- Kono, Y.
- Sakakibara, T.
- Kato, Y.
- Fåk, B.
- Ollivier, J.
- Lynn, J. W.
- Taniguchi, T.
- Wakita, M.
- Kadowaki, H.
Publication date
May 2016
DOI Publisher
American Physical Society (APS) ISSN
0031-9007 Journal
Physical Review LettersAbstract
スピン液体の近くの「隠れた秩序」. 京都大学プレスリリース. 2016-05-27.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
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