Surface Melting of Electronic Order

Abstract

We report temperature-dependent surface x-ray scattering studies of the orbital ordered surface in La${}_{0.5}$Sr${}_{1.5}$MnO${}_4$. We find that the interfacial width of the electronic order grows as the bulk ordering temperature is approached from below, though the bulk correlation length remains unchanged. Close to the transition, the surface is so rough that there is no well-defined electronic surface, despite the presence of bulk electronic order, that is the electronic surface has melted. Above the bulk transition, finite-sized isotropic fluctuations of orbital order are observed, with a correlation length equal to that of the electronic surfaces' in-plane correlation length at the transition temperature.

References in corpus (4)

• Explanation of Giant Cluster Coexistence in Doped Manganites and Other Compounds
• Structural and magnetic properties of the single-layer manganese oxide La{1-x}Sr{1+x}MnO4
• Full Bulk Spin Polarization and Intrinsic Tunnel Barriers at the Surface of Layered Manganites
• Surface effects on the orbital order in the single layered manganite La0.5Sr1.5MnO4

Cited by in corpus (3)

• Multi-mode excitation drives disorder during the ultrafast melting of a C4-symmetry-broken phase
• Thickness dependence and dimensionality effects of charge and magnetic orderings in La1/3Sr2/3FeO3 thin films
• Ultrafast surface melting of orbital order in La0.5Sr1.5MnO4