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The technique of spin-polarized scanning tunneling microscopy is investigatedfor its use in determining fine details of surface magnetic structure down tothe atomic scale. As a model sample, the row-wise anti-ferromagnetic Mn3N2(010)surface is studied. It is shown that the magnetic contrast in atomic-scaleimages is a strong function of the bias voltage around the Fermi level.Inversion of the magnetic contrast is also demonstrated. The experimentalSP-STM images and height profiles are compared with simulated SP-STM images andheight profiles based on spin-polarized density functional theory. The successof different tip models in reproducing the non-magnetic and magnetic STM datais explored.Comment: 15 pages, 7 figure

physical review. b, condensed matter and materials physics

Energy-dependent contrast in atomic-scale spin-polarized scanning tunneling microscopy of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Mn</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">N</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>(010): Experiment and first-principles theory

Energy-dependent contrast in atomic-scale spin-polarized scanning tunneling microscopy ofMn3N2(010): Experiment and first-principles theory