title: Formation and thickness evolution of periodic twin domains in manganite films grown on SrTiO3(001) substrates.
abstract: We present an extended synchrotron x-ray scattering study of the structure of thin manganite films grown on SrTiO3(001) substrates and reveal a new kind of misfit strain relaxation process which exploits twinning to adjust lattice mismatch. We show that this relaxation mechanism emerges in thin films as one-dimensional twinning waves which freeze out into a twin domain pattern as the manganite film continues to grow. A quantitative microscopic model which uses a matrix formalism is able to reproduce all x-ray features and provides a detailed insight into this novel relaxation mechanism. We further demonstrate how this twin angle pattern affects the transport properties in these functional films.
authors.affiliation: Max-Planck-Institut für Metallforschung, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Gebhardt
authors.forename: N V
authors.initials: NV
authors.lastname: Kasper
authors.forename: A
authors.initials: A
authors.lastname: Vigliante
authors.forename: P
authors.initials: P
authors.lastname: Wochner
authors.forename: H
authors.initials: H
authors.lastname: Dosch
authors.forename: F S
authors.initials: FS
authors.lastname: Razavi
authors.forename: H-U
authors.initials: HU
authors.lastname: Habermeier