Harris, A. BrooksBerlinsky, A. JohnBruder, Christoph2023-05-232023-05-231991-04-152015-07-09https://repository.upenn.edu/handle/20.500.14332/43154The nature of the ordering of a quantum spin‐1/2 Heisenberg antiferromagnet is considered in the presence of the strong lattice frustration associated with the pyrochlore lattice. A field theory indicates that quantum fluctuations lead to a state having dimerization that has long‐range static correlations not in 〈S〉 but rather in 〈S(r)⋅S(r+δ)〉. A sublattice ordering is found that is consistent with results obtained using degenerate perturbation theory to analyze the ground‐state manifold.Reprinted with permission from the Journal of Applied Physics. Copyright 1991, American Institute of Physics.PhysicsQuantum PhysicsArticle