Abstract

A classical two-leg spin ladder with an antiferromagnetic exchange interaction and easy axis anisotropy in an external magnetic field exhibits a spin flop transition. A single nonmagnetic impurity introduced into this system allows for the formation of a metastable localized spin flop state at a field above the bulk spin flop field. This state will be symmetrically pinned to the impurity. Two neighboring impurities on the same leg will also result in the stabilization of a localized state pinned to the impurities, but in this case the state is not centered on the impurities.

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