Impurity-induced frustration in correlated oxides

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

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4 pages, updated figures, accepted version

Scientific paper

10.1103/PhysRevLett.102.167201

Using the example of Zn-doped La2CuO4, we demonstrate that a spinless impurity doped into a non-frustrated antiferromagnet can induce substantial frustrating interactions among the spins surrounding it. This counterintuitive result is the key to resolving discrepancies between experimental data and earlier theories. Analytic and quantum Monte Carlo studies of the impurity-induced frustration are in a close accord with each other and experiments. The mechanism proposed here should be common to other correlated oxides as well.

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