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@INPROCEEDINGS{Rai:894200,
      author       = {Rai, V. and Jana, S. and Nandi, Shibabrata and Stunault, A.
                      and Perßon, J. and Brückel, T.},
      title        = {{P}olarized neutron diffraction of
                      {H}exagonal-({M}n0.78{F}e0.22)3{G}e},
      reportid     = {FZJ-2021-03091},
      year         = {2021},
      abstract     = {Topological quantum materials have attracted enormous
                      attention since their discovery due to the observed
                      anomalous transport effects (ATE), which originate from the
                      non-zero Berry curvature. Mn3Ge has gained special attention
                      because anomalous transport effects can be studied below the
                      Néel temperature (365 K), down to 2 K [1]. Since ATE emerge
                      from the robust topological band structure, it is
                      interesting to study the effects of Fe doping on ATE in
                      (Mn1-xFex)3Ge. Our transport measurements show the existence
                      of an anomalous Hall effect (AHE) in the intermediate
                      temperature range for the $22\%$ Fe doped sample. However,
                      the origin of the AHE cannot be attributed to Weyl points
                      without knowledge of the ground state magnetic structure of
                      doped samples. Therefore, we have performed polarized
                      neutron diffraction from the (Mn0.78Fe0.22)3Ge sample using
                      the D3 CRYOPAD setup at ILL, France. Our analysis concludes
                      that the magnetic structure of the $22\%$ Fe doped sample
                      remains the same as Mn3Ge in the temperature range where AHE
                      is observed. This suggests that the physics behind AHE
                      observed in doped samples is most likely the same as in
                      Mn3Ge. Therefore, it can be argued that the Weyl Fermions do
                      not vanish by suitable doping of the sample, as long as the
                      magnetic structure of the doped samples remains the same.},
      month         = {Jul},
      date          = {2021-07-27},
      organization  = {13th international Polarized Neutrons
                       for Condensed-Matter Investigations,
                       online event (online event), 27 Jul
                       2021 - 30 Jul 2021},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$},
      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},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/894200},
}