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@ARTICLE{Chattopadhyay:454440,
      author       = {Chattopadhyay, Basab and Balédent, V. and Panda, S. K. and
                      Yamamoto, Sh. and Duc, F. and Herrmannsdörfer, T. and
                      Uhlarz, M. and Gottschall, T. and Mathon, O. and Wang, Z.
                      and Strohm, Cornelius and Greenblatt, M. and
                      Foury-Leylekian, P. and Wosnitza, J.},
      title        = {$4f$ spin driven ferroelectric-ferromagnetic
                      multiferroicity in {P}r{M}n$_2${O}$_ 5$ under a magnetic
                      field},
      journal      = {Physical review / B},
      volume       = {102},
      number       = {9},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {PUBDB-2021-00514},
      pages        = {094408},
      year         = {2020},
      abstract     = {In contrast to all other members of the $RMn_2O_5$ family
                      with nonzero $4f$ electrons (R = Nd to Lu), $PrMn_2O_5$ does
                      not show any spin driven ferroelectricity in the
                      magnetically ordered phase. By means of high-field electric
                      polarization measurements up to 45 T, we have found that
                      this exceptional candidate undergoes a spin driven
                      multiferroic phase under magnetic field. X-ray magnetic
                      circular dichroism studies up to 30 T at the Pr $L_2$ edge
                      show that this ferroelectricity originates from and directly
                      couples to the ferromagnetic component of the $Pr^{3+}$
                      spins. Experimental observations along with our generalized
                      gradient-approximation $+U$ calculations reveal that this
                      exotic ferroelectric-ferromagnetic combination stabilizes
                      through the exchange-striction mechanism solely driven by a
                      $3d−4f$-type coupling, as opposed to the other $RMn_2O_5$
                      members with $3d−3d$ driven
                      ferroelectric-antiferromagnetic-type conventional type-II
                      multiferroicity.},
      cin          = {FS-PS},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-PS-20131107},
      pnm          = {6212 - Quantum Condensed Matter: Magnetism,
                      Superconductivity (POF3-621)},
      pid          = {G:(DE-HGF)POF3-6212},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000566885200004},
      doi          = {10.1103/PhysRevB.102.094408},
      url          = {https://bib-pubdb1.desy.de/record/454440},
}