Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-10-26
Phys. Rev. Lett. 106, 187202 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
10 pages, 4 figures. Supplemental material and body of paper combined together in 1 file
Scientific paper
10.1103/PhysRevLett.106.187202
Paramagnetic correlations in the magnetic material Yb2Ti2O7 have been investigated via neutron scattering, revealing a [111] rod of scattering intensity. Assuming interactions between the Yb^{3+} ions composed of all symmetry-allowed nearest neighbor exchange interactions and long-range dipolar interactions, we construct a model Hamiltonian that allows for an excellent description of the neutron scattering data. Our results provide compelling evidence for significant anisotropic exchange interactions in an insulating magnetic pyrochlore oxide. We also compute the real space correlations leading to the [111] rod of scattering.
Gingras Michel J. -P.
McClarty Paul A.
Regnault Louis P.
Ronnow Henrik M.
Sorge Andreas
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