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Investigation of van der Waals antiferromagnet MnPS<sub>3</sub> using X-ray Magnetic Linear Dichroism (XMLD).

ORAL

Abstract

As compared to ferromagnetic van der Waals (vdW) materials, there has not been many direct measurement on the antiferromagnetic vdW materials. In this talk, we present our experimental result on the bulk van der Waals antiferromagnet MnPS3 using element-resolved X-ray Magnetic Linear Dichroism (XMLD). By taking the X-ray absorption spectra (XAS) at the Mn L-edge absorption energies at various temperatures and with two orthogonal linear polarizations of the x-rays, we show that the luminescence yield (LY) indicates a neat shape of XMLD while total electron yield (TEY) indicates charging effect due to its semiconductor energy gap. There exists a non-zero XMLD effect due to the Mn antiferromagnetic order. Temperature-dependent XMLD indicates that the Neel temperature of MnPS3 is around ~78K, consistent with previous reports. XAS shows that all Mn elements in bulk MnPS3 are at Mn2+ state.

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Presenters

  • Tianye Wang

    University of California, Berkeley, Lawrence Berkeley National Laboratory

Authors

  • Tianye Wang

    University of California, Berkeley, Lawrence Berkeley National Laboratory

  • Qian Li

    University of Science and Technology of China

  • Mengmeng Yang

    Anhui University

  • Christoph Klewe

    Advanced Light Source, Lawrence Berkeley National Laboratory

  • Padraic Shafer

    Advanced Light Source, Lawrence Berkeley National Laboratory, Advanced Light Source, Lawrence Berkeley National Lab, Advanced Light Source, Lawrence Berkeley National Laboratory

  • Alpha T N'Diaye

    Lawrence Berkeley National Laboratory, Lawrence Berkeley National Lab, Advanced Light Source, Lawrence Berkeley National Lab

  • Chanyong Hwang

    Korea Research Inst of Standards and Sci, Korea Research Inst of Standards and Science (KRISS)

  • Zi Q. Qiu

    University of California, Berkeley