Order in the Heisenberg pyrochlore: the magnetic structure of Gd2Ti2O7

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.64.140407
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume64
Issue14
Pages140407–; # of pages: 4
AbstractThe rare earth pyrochlore material Gd2Ti2O7 is considered to be an ideal model frustrated Heisenberg antiferromagnet with additional dipolar interactions. For this system there are several untested theoretical predictions of the ground state ordering pattern. Here we establish the magnetic structure of isotopically enriched (160)Gd2Ti2O7, using powder neutron diffraction at a temperature of 50 mK. The magnetic structure at this temperature is a partially ordered, non-collinear antiferromagnetic structure, with propagation vector k= 1/2 1/2 1/2. It can be described as a set of "q=0" ordered kagome planes separated by zero interstitial moments. This magnetic structure agrees with theory only in part, leaving an interesting problem for future research. Comment: 4 pages, 2 figures
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12327773
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Record identifier6d13acd3-d98e-4c9a-ad64-93081513c8cd
Record created2009-09-10
Record modified2016-05-09
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