title: Atomic spin structure of antiferromagnetic domain walls.
abstract: The search for uncompensated magnetic moments on antiferromagnetic surfaces is of great technological importance as they are responsible for the exchange-bias effect that is widely used in state-of-the-art magnetic storage devices. We have studied the atomic spin structure of phase domain walls in the antiferromagnetic Fe monolayer on W(001) by means of spin-polarized scanning tunnelling microscopy and Monte Carlo simulations. The domain wall width only amounts to 6-8 atomic rows. Although walls oriented along <100> directions are found to be fully compensated, detailed analysis of <110>-oriented walls reveals an uncompensated perpendicular magnetic moment. Our result represents a major advance in the field of antiferromagnetism, and may lead to a better understanding of the magnetic interaction between ferromagnetic and antiferromagnetic materials.
authors: Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany. mbode@physnet.uni-hamburg.de
authors: M
authors: M
authors: Bode
authors: E Y
authors: EY
authors: Vedmedenko
authors: K
authors: K
authors: von Bergmann
authors: A
authors: A
authors: Kubetzka
authors: P
authors: P
authors: Ferriani
authors: S
authors: S
authors: Heinze
authors: R
authors: R
authors: Wiesendanger