Hidden order in Yb2TI2O7

ORAL

Abstract

We report low temperature specific heat and positive muon spin rotation ($\mu$-SR) measurements of both polycrystal and single crystal Yb$_2$Ti$_2$O$_7$. Our zero field (ZF) $\mu$-SR shows little spin relaxation temperature dependence in the polycrystal Yb$_2$Ti$_2$O$_7$, contrast to previously reported results. We observe no collinear ferromagnetic order, rather a hidden order ground state where spin fluctuations remain dynamic down to 16 mK. Single crystal Yb$_2$Ti$_2$O$_7$ zero field $\mu$-SR measurements with the crystallographic $<$111$>$ direction parallel to the initial muon polarization show small but measurable temperature dependence. In addition, our transverse field (TF) $\mu$-SR measurements show the spin susceptibility undergoes a distinct change at temperatures corresponding to the magnetic transition measured in the specific heat.

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Authors

  • Robert D&#039;Ortenzio

    • Department of Physics and Astronomy, McMaster University

  • Hanna Dabkowska

    • Brockhouse Institute for Materials Research

  • Sarah Dunsiger

    • Physik-Department E21, Technische Universit\&#034;at M\&#034;unchen

  • Tatsuo Goko

    • Department of Physics, Columbia University

  • Jan Kycia

    • Department of Physics and Astronomy, University of Waterloo

  • Lian Liu

    • Department of Physics, Columbia University

  • Teresa Medina

    • Department of Physics and Astronomy, McMaster University

  • Timothy Munsie

    • Department of Physics and Astronomy, McMaster University

  • David Pomaranski

    • Department of Physics and Astronomy, University of Waterloo

  • Kate Ross

    • Department of Physics and Astronomy, McMaster University

  • Yasutomo Uemura

    • Department of Physics, Columbia University

  • Travis Williams

    • Department of Physics and Astronomy, McMaster University

  • Graeme Luke

    • Canadian Institute for Advanced Research, McMaster University