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Journal Article

Mean-field model for the quadrupolar phases of UPd3


Rotter,  Martin
Martin Rotter, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Le, M. D., McEwen, K. A., Rotter, M., Doerr, M., Barcza, A., Park, J.-G., et al. (2014). Mean-field model for the quadrupolar phases of UPd3. Physical Review B, 89(23): 235114, pp. 1-11. doi:10.1103/PhysRevB.89.235114.

Cite as: http://hdl.handle.net/11858/00-001M-0000-001A-07AD-8
UPd3 is known to exhibit four antiferroquadrupolar ordered phases at low temperatures. We report measurements of the magnetization and magnetostriction of single crystal UPd3, along the principal symmetry directions, in fields up to 33 T. These results have been combined with recent inelastic neutron and x-ray resonant scattering measurements to construct a mean-field model of UPd3 including up to fourth nearest-neighbor interactions. In particular, we find that anisotropic quadrupolar interactions must be included in order to explain the low-temperature structures derived from the scattering data.