Crystal field states of Tb3+ in the pyrochlore spin liquid Tb2Ti2O7 from neutron spectroscopy

A. J. Princep; H. C. Walker; D. T. Adroja; D. Prabhakaran; A. T. Boothroyd

doi:10.1103/PhysRevB.91.224430

Crystal field states of Tb3+ in the pyrochlore spin liquid Tb2Ti2O7 from neutron spectroscopy

Strongly Correlated Electrons 2015-09-04 v1

Authors: A. J. Princep , H. C. Walker , D. T. Adroja , D. Prabhakaran , A. T. Boothroyd

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Abstract

We report time-of-flight neutron scattering measurements of the magnetic spectrum of Tb3+ in Tb2Ti2O7. The data, which extend up to 120 meV and have calibrated intensity, enable us to consolidate and extend previous studies of the single-ion crystal field spectrum. We successfully refine a model for the crystal field potential in Tb2Ti2O7 without relying on data from other rare earth titanate pyrochlores, and we confirm that the ground state is a non-Kramers doublet with predominantly |+/-4> components. We compare the model critically with earlier models.

Keywords

neutron scattering crystal field Tb2Ti2O7 pyrochlore spin liquid non-Kramers doublet magnetic spectrum

Cite

@article{arxiv.1501.04927,
  title  = {Crystal field states of Tb3+ in the pyrochlore spin liquid Tb2Ti2O7 from neutron spectroscopy},
  author = {A. J. Princep and H. C. Walker and D. T. Adroja and D. Prabhakaran and A. T. Boothroyd},
  journal= {arXiv preprint arXiv:1501.04927},
  year   = {2015}
}

Comments

7 pages, 3 figures

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