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@INPROCEEDINGS{Rai:906401,
      author       = {Rai, Venus and Nandi, Shibabrata and Stunault, Anne and
                      Schmidt, Wolfgang and Jana, Subhadip and Soh, Jian-Rui and
                      Persson, Jörg and Brückel, Thomas},
      title        = {{T}ransport and magnetic properties of the topological
                      ({W}eyl) semimetal: {H}exagonal - ({M}n1-α{F}eα)3{G}e (α
                      = 0 – 0.3)},
      reportid     = {FZJ-2022-01423},
      year         = {2022},
      abstract     = {In the case of Mn3Ge, the anomalous Hall effect (AHE) has
                      its origins in the topological Weyl nodes. The AHE can be
                      controlled by tuning of the Weyl points relative to the
                      Fermi surface, by suitable dopants of the parent phase.
                      Therefore, we have explored the electrical transport and
                      magnetic properties of the single crystal (Mn1-αFeα)3Ge to
                      study the change in AHE and chiral anomaly with Fe doping.
                      Clear signatures of the AHE and chiral anomaly were observed
                      for samples up to α = 0.22, in the temperature regime where
                      magnetization behaves the same as the parent sample.
                      However, the strength of AHE and chiral anomaly decreases
                      with an increase in Fe doping and vanishes beyond α = 0.22.
                      To predict the origin of AHE in doped samples, the ground
                      state magnetic structure of α = 0.22 was determined using
                      single-crystal (polarized and unpolarized) neutron
                      diffraction techniques. We observed that the magnetic
                      structure of the doped sample remains the same as that of
                      the parent compound in the temperature regime where AHE was
                      observed. These observations led us to two main conclusions:
                      (i) the Weyl points are very likely to be present in the
                      doped samples, and (ii) the characteristics of the Weyl
                      points can be tuned significantly by suitable doping of the
                      Weyl semimetals.},
      month         = {Mar},
      date          = {2022-03-14},
      organization  = {APS March Meeting 2022, Chicago and
                       online (USA and online), 14 Mar 2022 -
                       18 Mar 2022},
      subtyp        = {Invited},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128},
      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)6},
      url          = {https://juser.fz-juelich.de/record/906401},
}