Fig. 5: | Nature Communications

Fig. 5

From: Bending and breaking of stripes in a charge ordered manganite

Fig. 5

Topological singularity coincident with a PLD grain boundary. a A complete Δ = Δ 1 + Δ 2 map of the interface between a Δ 1-dominant region and coexisting Δ 1 and Δ 2 order. b A Δ 1 map of the same region reveals a dislocation in Δ 1, with a Burgers vector of one PLD wavelength, λ PLD q 1 ^ . Analogous to the elastic deformation of an atomic lattice about a crystal dislocation, the elastic response of the PLD includes bending and compression of wavefronts and local displacement rotations. Some attenuation of Δ 1 is apparent in the mixed region. ce The phase ϕ 1, |Δ 1|, and |Δ 2|, respectively, in the same region. Δ 1 weakens and Δ 2 grows within ~λ PLD of the defect core, where ϕ 1 exhibits an expected 2π winding. A narrow inlet of |Δ 1| amplitude collapse extends from the upper left to the singularity. The scale bar corresponds to 2 nm