Instantaneous Normal Mode Analysis of Melting of Finite Dust Clusters

André Melzer, André Schella, Jan Schablinski, Dietmar Block, and Alexander Piel
Phys. Rev. Lett. 108, 225001 – Published 29 May 2012

Abstract

The experimental melting transition of finite two-dimensional dust clusters in a dusty plasma is analyzed using the method of instantaneous normal modes. In the experiment, dust clusters are heated in a thermodynamic equilibrium from a solid to a liquid state using a four-axis laser manipulation system. The fluid properties of the dust cluster, such as the diffusion constant, are measured from the instantaneous normal mode analysis. Thereby, the phase transition of these finite clusters is approached from the liquid phase. From the diffusion constants, unique melting temperatures have been assigned to dust clusters of various sizes that very well reflect their dynamical stability properties.

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  • Received 9 February 2012

DOI:https://doi.org/10.1103/PhysRevLett.108.225001

© 2012 American Physical Society

Authors & Affiliations

André Melzer and André Schella

  • Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald, Germany

Jan Schablinski, Dietmar Block, and Alexander Piel

  • Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany

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Issue

Vol. 108, Iss. 22 — 1 June 2012

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Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

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