Nuclear Magnetic Resonance investigation of ferroquadrupolar order in TmVO4

ORAL

Abstract

TmVO4 undergoes structural phase transition from tetragonal to orthorhombic at 2.15K due to a cooperative Jahn-Teller distortion. The electronic ground state of Tm3+ is a non-Kramers doublet which is separated from the first excited state by 54 cm-1. We have performed 51V NMR in a single crystal to investigate critical behavior below and above the ferroquadrupolar transition temperature. We observed strong divergences on the spin lattice and spin spin relaxation rates at the transition temperature, and find that the ordering temperature is suppressed with field along the c-axis.

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Presenters

  • Yu-Hsuan Nian

    Department of Physics, University of California Davis, Davis, CA

Authors

  • Yu-Hsuan Nian

    Department of Physics, University of California Davis, Davis, CA

  • I. Vinograd

    University of California, Davis, Department of Physics, University of California Davis, Davis, CA

  • T. Greene

    Department of Physics, University of California Davis, Davis, CA

  • Z. Wang

    University of California, Davis, Department of Physics, University of California Davis, Davis, CA

  • P. Massat

    STANFORD UNIVERSITY, Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, CA 94305, USA

  • I. R Fisher

    Stanford Univ, Stanford University; SLAC National Accelerator Laboratory, Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, CA 94305, USA

  • N. J Curro

    University of California, Davis, Department of Physics, University of California Davis, Davis, CA