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@ARTICLE{Samartzis:909940,
      author       = {Samartzis, A. and Xu, J. and Anand, V. K. and Islam, A. T.
                      M. N. and Ollivier, J. and Su, Y. and Lake, B.},
      title        = {{P}inch points and half-moons in dipolar-octupolar
                      {N}d2{H}f2{O}7},
      journal      = {Physical review / B},
      volume       = {106},
      number       = {10},
      issn         = {1098-0121},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2022-03534},
      pages        = {L100401},
      year         = {2022},
      abstract     = {While it is established that the pinch point scattering
                      pattern in spin ice arises from an emergent Coulomb phase
                      associated with a magnetic moment that is divergence free,
                      more complex Hamiltonians can introduce a divergence-full
                      part. If these two parts remain decoupled, they give rise to
                      the coexistence of distinct features. Here, we show that the
                      moment in Nd2Hf2O7 forms a static long-range ordered ground
                      state, a flat, gapped pinch point excitation, and dispersive
                      excitations. These results confirm recent theories which
                      predict that the dispersive modes, which arise from the
                      divergence-full moment, host a pinch point pattern of their
                      own, observed experimentally as “half-moons.”},
      cin          = {JCNS-FRM-II / MLZ / JCNS-2 / JCNS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)DNS-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000858959100003},
      doi          = {10.1103/PhysRevB.106.L100401},
      url          = {https://juser.fz-juelich.de/record/909940},
}