On the Groundstate of the Novel SSL Material Yb<sub>2</sub>Be<sub>2</sub>GeO<sub>7</sub>

ORAL

Abstract

We present experimental evidence for a spin liquid groundstate in a novel Shastry-Sutherland lattice material Yb2Be2GeO7. Yb2Be2GeO7 shows no sign of a magnetic phase transition in SQUID magnetometry, nor specific heat capacity. No magnetic Bragg peaks are detected in elastic neutron diffraction. Muon spin spectroscopy reveals persistent spin dynamics down to 18mK. The lack of magnetic order and presence of persistent spin dynamics strongly suggest a spin liquid groundstate.

*Work at McMaster was supported by the Natural Sciences and Engineering Research of Council of Canada.

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Presenters

  • Mathew C Pula

    • McMaster University

Authors

  • Mathew C Pula

    • McMaster University

  • Graeme Luke

    • McMaster University

  • Sarah R Dunsiger

    • TRIUMF

  • Sudarshan Sharma

    • McMaster Univ

  • Jonah Gautreau

    • McMaster Univ

  • Amit Kanigel

    • Technion - Israel Institute of Technolog
    • Technion - Israel Institute of Technology

  • Sajilesh K. P.

    • Technion - Israel Institute of Technology
    • Physics Department, Technion-Israel Institute of Technology, Haifa 32000, Israel

  • Matthias D Frontzek

    • Oak Ridge National Lab