title: Tunable remote pinning of domain walls in magnetic nanowires.
abstract: Domain wall (DW) pinning in ferromagnetic nanowires is in general a complex process. Distortions of the DW shape make quantitative agreement between modeling and experiment difficult. Here we demonstrate pinning using nanometer scale localized stray fields. This type of interaction gives well-characterized, tailorable potential landscapes that do not appreciably distort the DW. Our experimental results are in excellent quantitative agreement with an Arrhenius-Néel model of depinning--a result only possible when the modeled potential profile agrees fully with that experienced by the DW.
authors.affiliation: Thin Film Magnetism Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom. lao24@cam.ac.uk
authors.forename: L
authors.initials: L
authors.lastname: O'Brien
authors.forename: D
authors.initials: D
authors.lastname: Petit
authors.forename: E R
authors.initials: ER
authors.lastname: Lewis
authors.forename: R P
authors.initials: RP
authors.lastname: Cowburn
authors.forename: D E
authors.initials: DE
authors.lastname: Read
authors.forename: J
authors.initials: J
authors.lastname: Sampaio
authors.forename: H T
authors.initials: HT
authors.lastname: Zeng
authors.forename: A-V
authors.initials: AV
authors.lastname: Jausovec