Real-space simulations of spin-polarized electronic transitions in iron

Abstract : After the advent of energy-loss magnetic chiral dichroism (EMCD) in 2006, rapid progress in theoretical understanding and in experimental performance was achieved, recently demonstrating a spatial resolution of better than 2 nm. Similar to the x-ray magnetic circular dichroism technique, EMCD is used to study atom specific magnetic moments. The latest generation of electron microscopes opens the road to the mapping of spin moments on the atomic scale with this method. Here the theoretical background to reach this challenging aim is elaborated. Numerical simulations of the L3 transition in an Fe specimen, based on a combination of the density-matrix approach for inelastic electron scattering with the propagation of the probe electron in the lattice potential indicate the feasibility of single spin mapping in the electron microscope
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Submitted on : Wednesday, November 14, 2012 - 3:13:44 PM
Last modification on : Tuesday, June 4, 2019 - 6:22:11 PM

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Peter Schattschneider, J. Verbeeck, V. Mauchamp, M. Jaouen, Ann-Lenaig Hamon. Real-space simulations of spin-polarized electronic transitions in iron. Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 82 (14), pp.1-5. ⟨10.1103/PhysRevB.82.144418⟩. ⟨hal-00751928⟩

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