title: Revealing antiferromagnetic order of the Fe monolayer on W(001): spin-polarized scanning tunneling microscopy and first-principles calculations.
abstract: We prove that the magnetic ground state of a single monolayer Fe on W(001) is c(2x2) antiferromagnetic, i.e., a checkerboard arrangement of antiparallel magnetic moments. Real space images of this magnetic structure have been obtained with spin-polarized scanning tunneling microscopy. An out-of-plane easy magnetization axis is concluded from measurements in an external magnetic field. The magnetic ground state and anisotropy axis are explained based on first-principles calculations.
authors.affiliation: Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Kubetzka
authors.forename: P
authors.initials: P
authors.lastname: Ferriani
authors.forename: M
authors.initials: M
authors.lastname: Bode
authors.forename: S
authors.initials: S
authors.lastname: Heinze
authors.forename: G
authors.initials: G
authors.lastname: Bihlmayer
authors.forename: K
authors.initials: K
authors.lastname: von Bergmann
authors.forename: O
authors.initials: O
authors.lastname: Pietzsch
authors.forename: S
authors.initials: S
authors.lastname: Blügel
authors.forename: R
authors.initials: R
authors.lastname: Wiesendanger