Frank's constant in the hexatic phase

Keim, Peter; Maret, Georg; von Grünberg, Hans Hennig

Frank's constant in the hexatic phase

Dateien

Keim_Frank.pdfGröße: 556.64 KBDownloads: 331

Datum

2007

Autor:innen

Keim, Peter

Maret, Georg

von Grünberg, Hans Hennig

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review E. 2007, 75(3). ISSN 1539-3755. Available under: doi: 10.1103/PhysRevE.75.031402

Zusammenfassung

Using videomicroscopy data of a two-dimensional colloidal system the bond-order correlation function G6 is calculated and used to determine both the orientational correlation length ξ6 in the liquid phase and the modulus of orientational stiffness, Frank’s constant FA, in the hexatic phase. The latter is an anisotropic fluid phase between the crystalline and the isotropic liquid phase. FA is found to be finite within the hexatic phase, takes the value 72∕π at the hexatic↔isotropic liquid phase transition, and diverges at the hexatic↔crystal transition as predicted by the Kosterlitz-Thouless-Halperin-Nelson-Young theory. This is a quantitative test of the mechanism of breaking the orientational symmetry by disclination unbinding.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

KEIM, Peter, Georg MARET, Hans Hennig VON GRÜNBERG, 2007. Frank's constant in the hexatic phase. In: Physical Review E. 2007, 75(3). ISSN 1539-3755. Available under: doi: 10.1103/PhysRevE.75.031402

BibTex

@article{Keim2007Frank-16894,
  year={2007},
  doi={10.1103/PhysRevE.75.031402},
  title={Frank's constant in the hexatic phase},
  number={3},
  volume={75},
  issn={1539-3755},
  journal={Physical Review E},
  author={Keim, Peter and Maret, Georg and von Grünberg, Hans Hennig}
}

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