Interfacial Dzyaloshinskii-Moriya interaction at an epitaxially grown ferromagnetic and heavy metal interface

ORAL

Abstract

We study Dzyaloshinskii-Moriya interaction(DMI) in a series of epitaxially grown CoFe/Pt films using momentum-resolved Brillouin light scattering. The symmetry breaking present in the bilayer allows interfacial DMI, which is expected to depend on atomic alignment at the interface. Different CoFe alloys are studied. Co(25)Fe(75) is of particular interest because it exhibits exceptionally low magnetic damping [ref]. By controlling the chemical composition, thickness and growth conditions, one can tune the DMI parameter along with other magnetic properties of the film. We can measure these different properties using a single technique, Brillouin Light Scattering, allowing for a full characterization of the tunable parameters which could allow for engineering materials with the desired combination of properties.

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Presenters

  • Kemal Sobotkiewich

    University of Texas at Austin, The University of Texas at Austin

Authors

  • Kemal Sobotkiewich

    University of Texas at Austin, The University of Texas at Austin

  • Aidan J Lee

    Ohio State University

  • Xin Ma

    University of Texas at Austin, The University of Texas at Austin

  • Kevin Olsson

    University of Texas at Austin

  • David Lujan

    University of Texas at Austin

  • Adam S Ahmed

    Ohio State University, Department of Physics, Ohio State University

  • Fengyuan Yang

    Ohio State University, Department of Physics, The Ohio State University

  • Xiaoqin (Elaine) Li

    University of Texas at Austin, University of Texas-Austin, The University of Texas at Austin, Department of Physics and Center for Complex Quantum Systems, Univ of Texas, Austin, Department of Physics, University of Texas at Austin, TX 78712, United States, Univ of Texas, Austin, Department of Physics, The University of Texas at Austin, Department of Physics, The University of Texas at Austin, USA