Double-layered monopolar order in Tb2Ti2O7 spin liquid

A. P. Sazonov; A. Gukasov; I. Mirebeau; P. Bonville

doi:10.1103/PhysRevB.85.214420

Double-layered monopolar order in Tb2Ti2O7 spin liquid

Strongly Correlated Electrons 2015-06-05 v1

Authors: A. P. Sazonov , A. Gukasov , I. Mirebeau , P. Bonville

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Abstract

Ho2Ti2O7 and Dy2Ti2O7 spin ices exhibit elementary excitations akin to magnetic monopoles. Here we focus on Tb2Ti2O7 spin liquid, where correlated magnetic moments keep fluctuating down to very low temperatures. Using a monopole picture, we have re-analyzed the field-induced magnetic structure previously determined by neutron diffraction in Tb2Ti2O7. We show that under a high field applied along a [110] direction, Tb2Ti2O7 orders as a three dimensional arrangement of monopole and antimonopole double layers. In contrast, Ho2Ti2O7 spin ice in the same conditions behaves as a monopole-free state. By symmetry analysis we derived the distortions compatible with the observed magnetic structure of Tb2Ti2O7 which can be related to the appearance of the double-layered monopolar order.

Keywords

frustrated magnetism magnetic topology phase transitions

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@article{arxiv.1205.2453,
  title  = {Double-layered monopolar order in Tb2Ti2O7 spin liquid},
  author = {A. P. Sazonov and A. Gukasov and I. Mirebeau and P. Bonville},
  journal= {arXiv preprint arXiv:1205.2453},
  year   = {2015}
}

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6 pages, 6 figures, submitted for publication

Double-layered monopolar order in Tb2Ti2O7 spin liquid

Abstract

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