title: Misfit-induced modification of structure and magnetism in O/Fe(001)-p(1×1).
abstract: The geometry of oxygen atoms in hollow sites of Fe nanoislands (⊘≈1-2  nm) on Fe(001) is modified by mesoscopic misfit-induced relaxations of the island atoms. Surface x-ray diffraction, scanning tunneling microscopy, and ab initio calculations indicate a 0.3 Å increased adsorption height [0.7 Å versus 0.4 Å in O/Fe(001)-p(1×1)] of O atoms going in parallel with a reduced Fe-Fe layer spacing inducing a reduction of the surface magnetic moment (2.85μ(B) versus 3.2μ(B)). Our results demonstrate the importance of the mesoscopic misfit for surface physical properties in general.
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Feng
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: H L
authors.initials: HL
authors.lastname: Meyerheim
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Mohseni
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: O
authors.initials: O
authors.lastname: Brovko
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: V S
authors.initials: VS
authors.lastname: Stepanyuk
authors.affiliation: Institut des Nano Sciences de Paris, UPMC-Sorbonne Universités, CNRS-UMR7588, 75005 Paris, France.
authors.forename: N
authors.initials: N
authors.lastname: Jedrecy
authors.affiliation: ESRF, B.P. 220, F-38043 Grenoble Cedex, France.
authors.forename: R
authors.initials: R
authors.lastname: Felici
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Kirschner