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7 papers
Lack of Evidence for a Singlet Crystal Field Ground State in the Tb2Ti2O7 Magnetic Pyrochlore
B. D. Gaulin, J. S. Gardner, P. A. McClarty +1
We present new high resolution inelastic neutron scattering data on the candidate spin liquid Tb2Ti2O7. We find that there is no evidence for a zero field splitting of the ground s…
Magnetic Pyrochlore Oxides
Jason S. Gardner, Michel J. P. Gingras, John E. Greedan
Within the past 20 years or so, there has occurred an explosion of interest in the magnetic behavior of pyrochlore oxides of the type O where is a…
Structural properties of the geometrically frustrated pyrochlore Tb2Ti2O7
S. -W. Han, J. S. Gardner, C. H. Booth
Although materials that exhibit nearest-neighbor-only antiferromagnetic interactions and geometrical frustration theoretically should not magnetically order in the absence of disor…
Variable-range-hopping conductivity of half-doped bilayer manganite LaSrMnO
X. J. Chen, C. L. Zhang, J. S. Gardner +2
We report measurements of in-plane and out-of-plane resistivities on a single crystal of the half-doped bilayer manganite LaSrMnO. In the tempera…
Er2Ti2O7: Evidence of Order by Disorder in a Frustrated Antiferromagnet
J. D. M. Champion, M. J. Harris, P. C. W. Holdsworth +14
Er_2Ti_2O_7 has been suggested to be a realization of the frustrated < 111 > XY pyrochlore lattice antiferromagnet, for which theory predicts fluctuation-induced symmetry breaking…
Order in the Heisenberg Pyrochlore: The Magnetic Structure of Gd2Ti2O7
J. D. M. Champion, A. S. Wills, T. Fennell +3
The rare earth pyrochlore material Gd2Ti2O7 is considered to be an ideal model frustrated Heisenberg antiferromagnet with additional dipolar interactions. For this system there are…