Interface Magnetization in Digitally Layered (LaMnO$_{3})_{2n }$/(SrMnO$_{3})_{n}$ Superlattices

Interfaces in solids have been an enduring theme in materials physics due to the exciting new physics that can emerge in interface regions arising from a variety of competing interactions. Because of this, multilayer materials can provide a novel means to separate disorder physics from other competing interactions. The samples used in this experiment were grown using ozone-assisted atomic layer by layer molecular beam epitaxy (ALL-MBE) on (100) oriented SrTiO$_{3}$. Using X-ray Resonant Magnetic Scattering, we present a comparison of the magnetic properties at interfaces of a series of (LaMnO$_{3})_{2n }$/(SrMnO$_{3})_{n}$ superlattices as a function of n ranging from 1 to 5 unit cells. Combined with transport measurements, the magnetic properties appear to be correlated with a change in the electronic properties of the superlattice. Work at Argonne is supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.