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@INPROCEEDINGS{Rai:906994,
      author       = {Rai, Venus and Nandi, Shibabrata and Brückel, Thomas and
                      Jana, Subhadip and Perßon, Jörg},
      title        = {{C}hiral anomaly and electronic transition in {H}exagonal
                      {M}n3{G}e},
      reportid     = {FZJ-2022-01806},
      year         = {2021},
      abstract     = {Topological quantum materials have attracted enormous
                      attention since their discovery due to the observedanomalous
                      transport properties, which originate due to the non-zero
                      Berry curvature. Mn3Ge has gainedspecial attention because
                      of its large anomalous Hall and Nernst effects that persist
                      starting from Néeltemperature (365 K) down to 2 K [1, 2].
                      Several experimental observations support the claim for
                      Mn3Geas a Weyl semimetal [1 - 3]. However, the chiral
                      anomaly in this sample has not been fully understood yet.We
                      have performed angle, temperature, and magnetic field (B)
                      dependent magnetoresistance (MR) andplanar Hall effect (PHE)
                      measurements with B and electric current (I) applied along
                      the variouscombinations of the crystallographic axes of
                      Mn3Ge. We have observed negative longitudinal MR and
                      PHEoscillations in certain magnetic field and temperature
                      regimes, for various combinations of I, B,
                      andcrystallographic axes. These observations are the
                      signature of chiral anomaly, but they can arise
                      withoutchiral anomaly also. The detailed analysis of the
                      temperature and magnetic field dependent behavior of MRand
                      PHE strongly suggest that the chiral anomaly is most likely
                      present in the Mn3Ge. Also, we haveobserved that the slope
                      of longitudinal MR and Hall resistivity at high field
                      changes its sign in thetemperature range of 165 - 230 K. The
                      lattice thermal expansion coefficient has also shown a
                      change insign near 230 K. These observations suggests that
                      the Mn3Ge goes through electronic phase transitionbelow 230
                      K, possibly driven by the lattice parameter of the sample.},
      month         = {Sep},
      date          = {2021-09-27},
      organization  = {International Conference in Strongly
                       Correlated Electrons systems, online
                       event (online event), 27 Sep 2021 - 2
                       Oct 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/906994},
}