Parts | Days | Selection | Search | Updates | Downloads | Help
MA: Fachverband Magnetismus
MA 4: Magnetic Heusler Compounds and Complex Magnetic Oxides
MA 4.3: Talk
Monday, March 18, 2024, 10:00–10:15, EB 107
Investigation of the relationship between structural, magnetic and electrical transport properties of Mn2Rh1−xIrxSn epitaxial Heusler thin films: experiments and theory — •Edouard Lesne1, Rebeca Ibarra1, Jorge Cardenas1, Paul A. McClarty2, Maia G. Vergniory1, Anastasios Markou1,3, and Claudia Felser1 — 1Max-Planck-Institute für Chemische Physik fester Stoffe, Dresden, Germany — 2Max-Planck-Institute für Physik komplexer Systeme, Dresden, Germany — 3Physics Department, University of Ioannina, Ioannina, Greece
The noncentrosymmetric Mn2Rh1−xIrxSn Heusler system which exhibits a noncollinear ferrimagnetic groundstate and is characterized by a D2d symmetry has been in the focus of attention since the independent observation of magnetic skyrmion (Sk) and antiskyrmion (aSk) quasiparticles by real-space imaging techniques, and further inferred from their topological electrical transport footprint to the Hall effect.
Here we investigate the intertwined structural, magnetic, and electrical transport properties of the compositional series Mn2Rh1−xIrxSn epitaxial thin films (with: 0 ≤ x ≤ 0.4) grown by magnetron sputtering. In particular we report on an unusual nonmomotonic and sign-changing temperature dependence of the anomalous conductivity (AHC) in all investigated samples. Our results are discussed in light of a combined tight-binding, density functional and mean-field theory approach, which predict the magnetic groundstate of the system and the magnitude of the intrinsic part of the AHC.
Keywords: Heusler; Epitaxial thin films; Magnetism; Anomalous Hall; Skyrmion