Magnetic Phase Diagram of Non-Collinear Antiferromagnetic Weyl Metal Mn<sub>3+<i>x</i></sub>Sn<sub>1-<i>x</i></sub>

ORAL

Abstract

The non-collinear antiferromagnet Mn3Sn shows large spontaneous time-reversal odd responses [1-4] in the inverse triangular spin structure state, which are considered to be signatures of Weyl nodes near the Fermi energy [5]. Mn3Sn single crystals are known to be stable in the presence of excess manganese atoms. Depending on the composition, three distinct magnetic phases can be realized as a function of temperature, namely the high temperature triangular spin structure phase (q =0), the intermediate-temperature helical phase (q ≠ 0), and the low-temperature cluster spin glass phase [7]. Here we present our study on the compositional dependence of Mn3-xSn1-x and discuss the systematic evolution of the three magnetic phases in Mn3Sn based on transport and magnetic properties.

[1] S. Nakatsuji, N. Kiyohara and T. Higo, Nature 527, 212-215 (2015).
[2] M. Ikhlas, T. Tomita, et. al., Nat. Phys. 13, 1085-1090 (2017).
[3] T. Higo, H. Man, et. al., Nat. Photonics 12, 73-78 (2018)
[4] M.-T. Suzuki, et. al., Phys. Rev. B 95, 012345 (2017).
[5] K. Kuroda, et.al., Nat. Mater. 16 (2017)

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Presenters

  • Muhammad Ikhlas

    • Institute for Solid State Physics, the University of Tokyo
    • ISSP, The University of Tokyo
    • Univ of Tokyo-Kashiwanoha
    • Institute for Solid State Physics, Univ of Tokyo-Kashiwanoha
    • ISSP, University of Tokyo

Authors

  • Muhammad Ikhlas

    • Institute for Solid State Physics, the University of Tokyo
    • ISSP, The University of Tokyo
    • Univ of Tokyo-Kashiwanoha
    • Institute for Solid State Physics, Univ of Tokyo-Kashiwanoha
    • ISSP, University of Tokyo

  • Takahiro Tomita

    • ISSP, The University of Tokyo
    • Univ of Tokyo-Kashiwanoha
    • Institute for Solid State Physics, Univ of Tokyo-Kashiwanoha

  • Satoru Nakatsuji

    • Univ of Tokyo-Kashiwanoha
    • University of Tokyo
    • Institute for Solid State Physics, University of Tokyo
    • Institute for Solid State Physics, the University of Tokyo
    • Department of Physics, The University of Tokyo
    • Department of Physics, University of Tokyo
    • The Institute for Solid State Physics, The University of Tokyo
    • Institute for Solid State Physics, Univ of Tokyo-Kashiwanoha