Skyrmion Lattice Manipulation with Electric and Thermal Currents

ORAL

Abstract

Understanding how to manipulate a Skyrmion lattice (SkL) is necessary to create new technologies that make use of them. Here we report on small-angle neutron scattering (SANS) studies of the SkL in MnSi under the influence of radial electric and thermal currents. Using a semicircular sample, the currents have a 1/r dependence. Applying an electric current through the sample causes the SkL to rotate. Interestingly, the rotation angle shows a nonmonotonic current dependence and eventually changes sign at high currents. This is likely due to competing effects from electrical and thermal currents, which go as I and I2 respectively. In my talk, I will discuss the interplay between these two competing effects.

*This work was supported in part by the U.S. Department of Energy, Office of Basic Energy Sciences, under Award No. DE-SC0005051. Sample preparation work at Argonne Natl. Lab. was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. A portion of this research used resources at the Swiss spallation neutron source SINQ, Paul Scherrer Institute.

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Presenters

  • Nathan S Chalus

    • University of Notre Dame

Authors

  • Nathan S Chalus

    • University of Notre Dame

  • Allan Leishman

    • University of Notre Dame

  • Grace M Longbons

    • University of Notre Dame

  • Eric D Bauer

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory, Los Alamos, New Mexico 87545, U.S.A.
    • Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA

  • Marc Janoschek

    • Paul Scherrer Institute

  • Ulrich Welp

    • Argonne National Laboratory
    • Materials Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439

  • Wai-Kwong K Kwok

    • Argonne National Laboratory
    • Materials Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439

  • Robert Cubitt

    • Institut Laue–Langevin
    • Institut Laue-Langevin
    • Institue Laue-Langevin

  • Jonathan S White

    • Paul Scherrer Institute

  • Morten R Eskildsen

    • University of Notre Dame