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@ARTICLE{Soh:586317,
      author       = {Soh, Jian Rui and Bombardi, Alessandro and Mila, Frédéric
                      and Rahn, Marein and Prabhakaran, Dharmalingam and
                      Francoual, Sonia and Rønnow, Henrik M. and Boothroyd,
                      Andrew},
      title        = {{U}nderstanding unconventional magnetic order in a
                      candidate axion insulator by resonant elastic x-ray
                      scattering},
      journal      = {Nature Communications},
      volume       = {14},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {PUBDB-2023-03871},
      pages        = {3387},
      year         = {2023},
      abstract     = {Magnetic topological insulators and semimetals are a class
                      of crystalline solids whose properties are strongly
                      influenced by the coupling between non-trivial electronic
                      topology and magnetic spin configurations. Such materials
                      can host exotic electromagnetic responses. Among these are
                      topological insulators with certain types of
                      antiferromagnetic order which are predicted to realize axion
                      electrodynamics. Here we investigate the highly unusual
                      helimagnetic phases recently reported in EuIn<sub>2
                      </sub>As<sub>2 </sub>, which has been identified as a
                      candidate for an axion insulator. Using resonant elastic
                      x-ray scattering we show that the two types of magnetic
                      order observed in EuIn<sub>2 </sub>As<sub>2 </sub> are
                      spatially uniform phases with commensurate chiral magnetic
                      structures, ruling out a possible phase separation scenario,
                      and we propose that entropy associated with low energy spin
                      fluctuations plays a significant role in driving the phase
                      transition between them. Our results establish that the
                      magnetic order in EuIn<sub>2 </sub>As<sub>2 </sub> satisfies
                      the symmetry requirements for an axion insulator.},
      cin          = {DOOR ; HAS-User / FS-PETRA-S},
      ddc          = {500},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PETRA-S-20210408},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
                      HERO - Hidden, entangled and resonating orders (810451)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(EU-Grant)810451},
      experiment   = {EXP:(DE-H253)P-P09-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37296136},
      UT           = {WOS:001026289800038},
      doi          = {10.1038/s41467-023-39138-5},
      url          = {https://bib-pubdb1.desy.de/record/586317},
}