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Motile dislocations melt an odd crystal

ORAL

Abstract

2d crystals melt as a result of the proliferation and annihilation of dislocations ruled by The competition between thermal fluctuations and potential forces. We show that introducing transverse interactions dramatically alters  dislocations dynamics and phase behavior. An isolated dislocation moves ballistically when transverse forces are present. 

Crystal stability is then chiefly determined by the competition between dislocation motility and elastic interactions. These dynamics produce a new crystalline whorl state that we consistently observe in minimal simulations and a colloidal spinner experiment.

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Presenters

  • Yehuda A Ganan

    University of Chicago

Authors

  • Yehuda A Ganan

    University of Chicago

  • Ephraim S Bililign

    University of Chicago

  • Florencio Balboa Usabiaga

    Flatiron Institute, Basque Center for Applied Mathematics, Simons Foundation

  • Alexis Poncet

    École Normale Supérieure de Lyon, University of Lyon, école normale supérieure de lyon, Ecole Normale Supérieure de Lyon, Laboratoire de physique, ENS de Lyon

  • Vishal H Soni

    University of Chicago

  • Sofia Magkiriadou

    École Polytechnique Fédérale de Lausanne (EPFL), University of Chicago, École polytechnique fédérale de Lausanne (EPFL)

  • Denis Bartolo

    Ecole Normale Superieure de Lyon, École Normale Supérieure de Lyon, Laboratoire de Physique, ENS de Lyon

  • Michael J Shelley

    Courant Inst. (NYU), Flatiron Inst. (SF), Flatiron Institute and New York University, Flatiron Institute and Courant Institute, New York University, Flatiron Institute

  • William T Irvine

    University of Chicago, James Franck Institute, Enrico Fermi Institute, University of Chicago