Publikation:

Anisotropic defect-mediated melting of two-dimensional colloidal crystals

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Eisenmann_Anisotropic.pdf
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2004

Autor:innen

Eisenmann, Christoph

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http://nbn-resolving.de/urn:nbn:de:bsz:352-172619
DOI (zitierfähiger Link)
https://doi.org/10.1103/PhysRevLett.93.105702
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Published

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Physical Review Letters. 2004, 93(10). ISSN 0031-9007. Available under: doi: 10.1103/PhysRevLett.93.105702

Zusammenfassung

The melting transition of anisotropic two-dimensional (2D) crystals is studied in a model system of superparamagnetic colloids. The anisotropy of the induced dipole-dipole interaction is varied by tilting the external magnetic field off the normal to the particle plane. By analyzing the time-dependent Lindemann parameter as well as translational and orientational order we observe a 2D smecticlike phase. The Kosterlitz-Thouless-Halperin-Nelson-Young scenario of isotropic melting is modified: dislocation pairs and dislocations appear with different probabilities depending on their orientation with respect to the in-plane field.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

Solid-liquid transitions, Studies of specific liquid structures, Linear defects: dislocations, disclinations, Colloids

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ISO 690EISENMANN, Christoph, Urs GASSER, Peter KEIM, Georg MARET, 2004. Anisotropic defect-mediated melting of two-dimensional colloidal crystals. In: Physical Review Letters. 2004, 93(10). ISSN 0031-9007. Available under: doi: 10.1103/PhysRevLett.93.105702
BibTex
@article{Eisenmann2004Aniso-17261,
  year={2004},
  doi={10.1103/PhysRevLett.93.105702},
  title={Anisotropic defect-mediated melting of two-dimensional colloidal crystals},
  number={10},
  volume={93},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Eisenmann, Christoph and Gasser, Urs and Keim, Peter and Maret, Georg}
}
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