Atomic and electronic structure of thin films of Mn on Pd{111}

Epitaxial films of Mn can be grown on Pd{111} to thicknesses of the order of 15--20 layers. Vacuum deposition on a room-temperature substrate produces a threefold-symmetric 1×{}1 phase with in-plane lattice constant a=2.75 {} (pseudomorphic to Pd{111}) and bulk interlayer spacing dbulk=2.16 {}. This structure probably corresponds to strained magnetic {γ}-Mn. Vacuum deposition on a 150 ^∘{}C substrate produces a sixfold-symmetric {}3 ×{} {}3 -30 ^∘{} structure, which is probably a bulk phase with in-plane lattice constant a=4.76 {}. The atomic structure of this phase is unknown, but may be related to {α}-Mn.