Destruction of long-range order in noncollinear two-dimensional antiferromagnets by random-bond disorder

  title={Destruction of long-range order in noncollinear two-dimensional antiferromagnets by random-bond disorder},
  author={Santanu S. Dey and Eric C. Andrade and Matthias Vojta},
  journal={Physical Review B},
We consider frustrated Heisenberg antiferromagnets, whose clean-limit ground state is characterized by non-collinear long-range order with non-zero vector chirality, and study the effects of quenched bond disorder, i.e., random exchange couplings. A single bond defect is known to induce a dipolar texture in the spin background independent of microscopic details. Using general analytical arguments as well as large-scale simulations for the classical triangular-lattice Heisenberg model, we show… 

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