Neutron diffraction studies of magnetic order in epitaxial Mn3Sn thin films

ORAL

Abstract

The application potential of the magnetic Weyl semimetal Mn3Sn in the field of high-speed, high-density information storage is vast. Until recently, studies aimed at directly probing the magnetic structure and its impact on electron transport properties have been limited to bulk single crystals. Characterizing the properties of both the static and (current-driven) dynamic magnetic domains in Mn3Sn thin films, however, is a crucial step in realizing practical device applications. We report on elastic neutron diffraction experiments performed on (100)-oriented sputtered Mn3Sn thin films that elucidate the antichiral and low-T helical spiral phases. These results are consistent with anomalous Hall measurements on the same samples and with experiments on single crystals. We expect a fascinating interplay between thin film confinement and the magnetic properties of Mn3Sn, and our experiments show neutron diffraction can provide the necessary structural information.

** This work was supported by the U.S. DOE Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division DE-SC0024469. CB was supported by the Gordon and Betty Moore foundation through GBMF9456

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Presenters

  • Mikias Belante Balkew

    • Johns Hopkins University

Authors

  • Mikias Belante Balkew

    • Johns Hopkins University

  • Takumi Matsuo

    • Johns Hopkins University
    • Johns Hopkins Unversity

  • M. Raju

    • Johns Hopkins University

  • Adam A Aczel

    • Oak Ridge National Laboratory

  • Yi Luo

    • Oak Ridge National Laboratory

  • Masaaki Matsuda

    • Oak Ridge National Laboratory

  • Avishek Maity

    • Oak Ridge National Laboratory

  • Satoru Nakatsuji

    • University of Tokyo
    • University of Tokyo, Johns Hopkins University
    • Univ of Tokyo

  • Collin L Broholm

    • Johns Hopkins University