title: Atomic-scale magnetic domain walls in quasi-one-dimensional Fe nanostripes.
abstract: Fe nanostripes on W(110) are investigated by Kerr magnetometry and spin-polarized scanning tunneling microscopy (SP-STM). An Arrhenius law is observed for the temperature dependent magnetic susceptibility indicating a one-dimensional magnetic behavior. The activation energy for creating antiparallel spin blocks indicates extremely narrow domain walls with a width on a length scale of the lattice constant. This is confirmed by imaging the domain wall by SP-STM. This information allows the quantification of the exchange stiffness and the anisotropy constant.
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, D-55099 Mainz, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Pratzer
authors.forename: H J
authors.initials: HJ
authors.lastname: Elmers
authors.forename: M
authors.initials: M
authors.lastname: Bode
authors.forename: O
authors.initials: O
authors.lastname: Pietzsch
authors.forename: A
authors.initials: A
authors.lastname: Kubetzka
authors.forename: R
authors.initials: R
authors.lastname: Wiesendanger