Phonons in Ultrathin Oxide Films: 2D to 3D Transition in FeO on Pt(111).


The structural and magnetic properties of ultrathin FeO(111) films on Pt(111) with thicknesses from 1 to 16 monolayers (MLs) were studied using the nuclear inelastic scattering of synchrotron radiation. A distinct evolution of vibrational characteristics with thickness, revealed in the phonon density of states (PDOS), shows a textbook transition from 2D to… (More)
DOI: 10.1103/PhysRevLett.115.186102