Revealing antiferromagnetic order of the Fe monolayer on W(001): spin-polarized scanning tunneling microscopy and first-principles calculations

A Kubetzka; P Ferriani; M Bode; S Heinze; G Bihlmayer; K von Bergmann; O Pietzsch; S Blügel; R Wiesendanger

doi:10.1103/PhysRevLett.94.087204

Revealing antiferromagnetic order of the Fe monolayer on W(001): spin-polarized scanning tunneling microscopy and first-principles calculations

Phys Rev Lett. 2005 Mar 4;94(8):087204. doi: 10.1103/PhysRevLett.94.087204. Epub 2005 Mar 3.

Authors

A Kubetzka¹, P Ferriani, M Bode, S Heinze, G Bihlmayer, K von Bergmann, O Pietzsch, S Blügel, R Wiesendanger

Affiliation

¹ Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany.

PMID: 15783926
DOI: 10.1103/PhysRevLett.94.087204

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.