Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO$_4$

Z. Wang; I. Vinograd; Z. Mei; P. Menegasso; D. Garcia; P. Massat; I. R. Fisher; N. J. Curro

doi:10.1103/PhysRevB.104.205137

Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO$_4$

Strongly Correlated Electrons 2021-12-02 v1

Authors: Z. Wang , I. Vinograd , Z. Mei , P. Menegasso , D. Garcia , P. Massat , I. R. Fisher , N. J. Curro

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Abstract

TmVO $_4$ exhibits ferroquadrupolar order below 2.15 K with a well-isolated non-Kramers ground state doublet, and is a model system to understand Ising nematic order. We present $^{51}$ V nuclear magnetic resonance data as a function of field orientation in a single crystal. Although the spectra are well understood in terms of direct dipolar hyperfine couplings, the spin lattice relaxation rate exhibits strong anisotropy that cannot be understood in terms of magnetic fluctuations. We find that the spin lattice relaxation rate scales with the shear elastic constant associated with the ferroquadrupole phase transition, suggesting that quadrupole (nematic) fluctuations dominate the spin lattice relaxation for in-plane fields.

Keywords

anisotropic nematic fluctuations ferroquadrupolar transition TmVO4 nuclear magnetic resonance spin lattice relaxation rate shear elastic constant Ising nematic order

Cite

@article{arxiv.2108.10393,
  title  = {Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO$_4$},
  author = {Z. Wang and I. Vinograd and Z. Mei and P. Menegasso and D. Garcia and P. Massat and I. R. Fisher and N. J. Curro},
  journal= {arXiv preprint arXiv:2108.10393},
  year   = {2021}
}

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7 pages, 5 figures

Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO$_4$

Abstract

Keywords

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