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  Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7

Borzi, R. A., Gomez Albarracin, F. A., Rosales, H. D., Rossini, G. L., Steppke, A., Prabhakaran, D., et al. (2016). Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7. Nature Communications, 7: 12592, pp. 1-8. doi:10.1038/ncomms12592.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-B997-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-1257-3
Genre: Journal Article

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 Creators:
Borzi, R. A.1, Author
Gomez Albarracin, F. A.1, Author
Rosales, H. D.1, Author
Rossini, G. L.1, Author
Steppke, Alexander2, Author              
Prabhakaran, D.1, Author
Mackenzie, A. P.3, Author              
Cabra, D. C.1, Author
Grigera, S. A.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              

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 Abstract: Among the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalization of excitations in three dimensions all stem from a simple classical Hamiltonian. But is the usual spin-ice Hamiltonian a correct description of the experimental systems? Here we address this issue by measuring magnetic susceptibility in the two most studied spin-ice compounds, Dy2Ti2O7 and Ho2Ti2O7, using a vector magnet. Using these results, and guided by a theoretical analysis of possible distortions to the pyrochlore lattice, we construct an effective Hamiltonian and explore it using Monte Carlo simulations. We show how this Hamiltonian reproduces the experimental results, including the formation of a phase of intermediate polarization, and gives important information about the possible ground state of real spin-ice systems. Our work suggests an unusual situation in which distortions might contribute to the preservation rather than relief of the effects of frustration.

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Language(s): eng - English
 Dates: 2016-08-252016-08-25
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000383652800001
DOI: 10.1038/ncomms12592
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 12592 Start / End Page: 1 - 8 Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723