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@ARTICLE{Marino:589256,
      author       = {Marino, Andrea and Christovam, Denise S. and Chang, Chun-Fu
                      and Falke, Johannes and Kuo, Chang-Yang and Wu, Chi-Nan and
                      Sundermann, Martin and Amorese, Andrea and Gretarsson,
                      Hlynur and Lee-Wong, Eric and Moir, Camilla M. and Deng,
                      Yuhang and Maple, M. Brian and Thalmeier, Peter and Tjeng,
                      Liu Hao and Severing, Andrea},
      title        = {{F}e substitution in {UR}u$_2${S}i$_2$ : {S}inglet
                      magnetism in an extended {D}oniach phase diagram},
      journal      = {Physical review / B},
      volume       = {108},
      number       = {8},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {PUBDB-2023-05121},
      pages        = {085128},
      year         = {2023},
      abstract     = {The application of pressure as well as the successive
                      substitution of Ru with Fe in the hidden order (HO) compound
                      URu$_2$Si$_2$ leads to the formation of the large-moment
                      antiferromagnetic phase. Here, we investigate the
                      substitution series URu$_{2−x}$FexSi$_2$ from x=0.0 to 2.0
                      by U 4f core-level photoelectron spectroscopy and observe
                      nonmonotonic changes in the spectra. The initial increase
                      and subsequent decrease in the spectral weight of the 4f
                      core-level satellite with increasing x stands for a
                      nonmonotonic 5f filling across the substitution series. The
                      competition of chemical pressure and increase in the density
                      of states at the Fermi energy, both due to substitution of
                      Ru with Fe, can explain such behavior. An extended Doniach
                      phase diagram including the x dependence of the density of
                      states is proposed. Also in URu$_{2−x}$FexSi$_2$ the
                      ground state is a singlet or quasidoublet state consisting
                      of two singlets. Hence, the formation of magnetic order in
                      the URu$_{2−x}$FexSi$_2$ substitution series must be
                      explained within a singlet magnetism model.},
      cin          = {DOOR ; HAS-User / FS-PETRA-S},
      ddc          = {530},
      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) /
                      DFG project 387555779 - Von versteckter bis
                      antiferromagnetischer Ordnung mit großem Moment in URu2Si2:
                      eine Röntgenstrahluntersuchung der 5f Besetzung und
                      Wellenfunktionssymmetrie. (387555779)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(GEPRIS)387555779},
      experiment   = {EXP:(DE-H253)P-P01-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001105971400003},
      doi          = {10.1103/PhysRevB.108.085128},
      url          = {https://bib-pubdb1.desy.de/record/589256},
}