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@ARTICLE{Saha:1044855,
      author       = {Saha, Debasish and Parnell, Steven and Honecker, Dirk and
                      Shin, Eunjoo and Schwärzer, Kuno and Förster, Stephan and
                      Frielinghaus, Henrich},
      title        = {{O}riented composition fluctuation domains of a
                      two-dimensionally confined critical {I}sing fluid},
      journal      = {The journal of chemical physics},
      volume       = {163},
      number       = {5},
      issn         = {0021-9606},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2025-03396},
      pages        = {054507},
      year         = {2025},
      abstract     = {A quasi-binary two-dimensional Ising critical system with
                      the main components D2O and butyric acid confined by
                      surfactant layers has been studied. The surfactant forms
                      large planar layers and is the basis of the charge density
                      waves with wave fronts aligned with the layers. To orient
                      the domains in an external magnetic field, thulium ions were
                      added to the system (replacing sodium in the surfactant with
                      thulium and adding more TmCl3). The critical behavior of the
                      forward scattering and the correlation length were observed
                      to be more mean-field-like. This can be explained by the
                      presence of the trivalent thulium ions mediating between
                      water and butyric acid. The high-Q scattering could be
                      distinguished in the different directions and the ideal
                      two-dimensional critical composition fluctuation exponent
                      ηxy = 1/4 was observed, while the other exponent ηz =
                      −0.08 ± 0.06 was slightly negative due to a finite
                      acceptance angle and the finite magnetic field. The
                      orientationally averaged high-Q exponent x of this study is
                      well-explained by ηxy = 1/4 of the two-dimensional Ising
                      behavior and ηz = 0.},
      cin          = {JCNS-FRM-II / JCNS-4 / MLZ / JCNS-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-4-20201012 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-1-20110106},
      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)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {40757837},
      UT           = {WOS:001544181900002},
      doi          = {10.1063/5.0270667},
      url          = {https://juser.fz-juelich.de/record/1044855},
}