The Magnetic Structure of $Er_{2}Ti_{2}O_{7}$

A. K. R. Briffa; R. J. Mason; M. W. Long

doi:10.1103/PhysRevB.84.094427

The Magnetic Structure of $Er_{2}Ti_{2}O_{7}$

Strongly Correlated Electrons 2015-05-27 v1 Other Condensed Matter

Authors: A. K. R. Briffa , R. J. Mason , M. W. Long

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Abstract

We employ the previously published neutron scattering experiments\cite{1,2,3} to suggest that Er $_2$ Ti $_2$ O $_7$ has a broken-symmetry multiple-{\bf q} state with tetragonal magnetic symmetry\cite{4}. The ordered moments do not appear to lie close to the crystal-field anticipated directions\cite{5} and we suggest that the low energy gapless mode, visible in specific-heat measurements\cite{6}, is not of the usual transverse isotropic Goldstone-mode type, but is longitudinal and is associated with the internal transfer of magnetism between distinct magnetic Bragg spots.

Keywords

magnetic structure multiple-q state neutron scattering crystal field goldstone mode

Cite

@article{arxiv.1103.2862,
  title  = {The Magnetic Structure of $Er_{2}Ti_{2}O_{7}$},
  author = {A. K. R. Briffa and R. J. Mason and M. W. Long},
  journal= {arXiv preprint arXiv:1103.2862},
  year   = {2015}
}

Comments

10 pages, 5 figures

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