Impurity effects in highly frustrated diamond-lattice antiferromagnets

  title={Impurity effects in highly frustrated diamond-lattice antiferromagnets},
  author={Lucile Savary and Emanuel Gull and Simon Trebst and Jason Alicea and Doron L. Bergman and Leon Balents},
  journal={Physical Review B},
We consider the effects of local impurities in highly frustrated diamond-lattice antiferromagnets, which exhibit large but nonextensive ground-state degeneracies. Such models are appropriate to many A-site magnetic spinels. We argue very generally that sufficiently dilute impurities induce an ordered magnetic ground state and provide a mechanism of degeneracy breaking. The states that are selected can be determined by a “swiss cheese model” analysis, which we demonstrate numerically for a… Expand

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