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@ARTICLE{Jugovac:1048406,
      author       = {Jugovac, M. and Cojocariu, I. and Bihlmayer, Gustav and
                      Gargiani, P. and Valvidares, M. and Brondin, C. A. and
                      Blügel, Stefan and Locatelli, A. and Mentes, T. O. and
                      Perna, P.},
      title        = {{P}ersistent {M}agnetism and {T}unable {D}oping of
                      {M}onolayer {G}raphene via {E}uropium {D}ensity
                      {M}odulation},
      journal      = {Advanced science},
      volume       = {},
      issn         = {2198-3844},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2025-04618},
      pages        = {e21592},
      year         = {2025},
      abstract     = {Reaching the van Hove singularity (VHS) in a material
                      enables the emergence of exotic electronic and magnetic
                      phases, such as superconductivity and the quantum anomalous
                      Hall effect. This is demonstrated in cuprates,magic-angle
                      bilayer graphene, and more recently, monolayer graphene
                      interfaced with alkali and rare earth elements. Here, the
                      europium density at the graphene/rhenium interface is
                      modulated to tune the electron doping level in monolayer
                      graphene across the VHS point, forming either a dense or
                      diluted europium phase. The dense phase enables flat bands
                      at the Fermi level, while graphene remains decoupled from
                      the Re(0001) substrate in both cases. The Dirac point is
                      shifted over 1.5 eV below the Fermi level, and europium
                      lifts the degeneracy of the Dirac cones: one branch
                      hybridizes with Eu 4f states, the other retains Dirac-like
                      dispersion, as corroborated by density functional theory.
                      X-ray absorption spectroscopy reveals a mixed Eu(II)/Eu(III)
                      valence state in the dense phase and the persistence of Eu
                      magnetic response up to room temperature in both. The
                      intercalated phases exhibit exceptional thermal stability,
                      with the diluted phase stable up to 960 K. These results
                      highlight the potential of rare-earth-doped graphene for
                      engineering flat bands, tunable Dirac-cone splitting, and
                      robust interfacial magnetism.},
      cin          = {PGI-1 / JARA-HPC},
      ddc          = {624},
      cid          = {I:(DE-Juel1)PGI-1-20110106 / $I:(DE-82)080012_20140620$},
      pnm          = {5211 - Topological Matter (POF4-521) / SFB 1238 C01 -
                      Strukturinversionsasymmetrische Materie und
                      Spin-Orbit-Phänomene mittels ab initio (C01) (319898210)},
      pid          = {G:(DE-HGF)POF4-5211 / G:(GEPRIS)319898210},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1002/advs.202521592},
      url          = {https://juser.fz-juelich.de/record/1048406},
}