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@INPROCEEDINGS{Su:1034929,
      author       = {Su, Yixi},
      title        = {{N}eutron scattering on magnetic topological materials},
      reportid     = {FZJ-2025-00042},
      year         = {2022},
      abstract     = {Magnetic topological materials, such as magnetic Dirac and
                      Weyl semimetals, and intrinsic magnetic topological
                      insulators, in which topologically non-trivial band
                      structures, magnetism and electronic correlation effects can
                      be intertwined, have recently emerged as an exciting
                      platform to explore exotic states and novel functionalities.
                      As a unique microscopic probe for magnetism, neutron
                      scattering is ideally suited for the investigations of
                      magnetic correlations over a wide range of length and time
                      scales in these emergent quantum materials. In this talk, I
                      will present our recent neutron scattering studies of
                      magnetic topological materials, with the main aim to
                      demonstrate the fascinating interplay between topology,
                      magnetism and electronic correlation. In the Dirac semimetal
                      EuMnBi$_2$, the evidence for the possible impact of
                      magnetism on Dirac fermions is obtained via a detailed
                      neutron diffraction study of the spin-flop transition [1].
                      In the two-dimensional van der Waals honeycomb ferromagnets
                      CrSiTe$_3$ and CrGeTe$_3$, the exotic topological magnon
                      insulators, the bosonic analogue of topological insulators,
                      have been experimentally realized based on our inelastic
                      neutron scattering study and theoretical analysis of
                      spin-wave excitations [2]. Furthermore, in the magnetic Weyl
                      semimetal Mn$_3$Sn, an unusual magnetic phase transition
                      that is driven by emergent many-body effects can be revealed
                      via our combined polarised neutron scattering study and
                      band-structure calculations [3].[1] F. Zhu, et al., Phys.
                      Rev. Research 2, 043100 (2020).[2] F. Zhu, et al., Sci. Adv.
                      7, eabi7532 (2021).[3] X. Wang, et al., (submitted).},
      month         = {Oct},
      date          = {2022-10-26},
      organization  = {Invited Seminar at IQMT, KIT, IQMT,
                       KIT, Karlsruhe (Germany), 26 Oct 2022 -
                       26 Oct 2022},
      subtyp        = {Invited},
      cin          = {JCNS-FRM-II / MLZ},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      experiment   = {EXP:(DE-MLZ)DNS-20140101 / EXP:(DE-MLZ)HEIDI-20140101 /
                      EXP:(DE-MLZ)PUMA-20140101 / EXP:(DE-Juel1)ILL-IN12-20150421
                      / EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)31},
      url          = {https://juser.fz-juelich.de/record/1034929},
}