Kapfer Krauth 2014

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'''S. C. Kapfer, W. Krauth ''' '''S. C. Kapfer, W. Krauth '''
'''''Soft-disk melting: From liquid-hexatic coexistence to continuous transitions ''''' ''' arXiv:1406.7224 (2014)''' '''''Soft-disk melting: From liquid-hexatic coexistence to continuous transitions ''''' ''' arXiv:1406.7224 (2014)'''
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To appear in '''Physical Review Letters (2015)''' To appear in '''Physical Review Letters (2015)'''

Revision as of 22:48, 17 December 2014

S. C. Kapfer, W. Krauth Soft-disk melting: From liquid-hexatic coexistence to continuous transitions arXiv:1406.7224 (2014)

To appear in Physical Review Letters (2015)

Paper (Preprint)

Abstract The phase diagram of two-dimensional soft disks with repulsive power-law pair interactions ∝r^(−n) is determined using Event-Chain Monte Carlo. The recently established melting scenario for hard disks (corresponding to n=∞) is preserved for finite n, and first-order liquid-hexatic and continuous hexatic-solid transitions are identified. The density difference between the coexisting hexatic and liquid is non-monotonous as a function of n. For smaller n, the coexisting liquid shows extremely long orientational correlations, and positional correlations in the hexatic become extremely short. For n≲6, the liquid-hexatic transition is continuous, with correlations consistent with the KTHNY scenario.

Electronic version (from arXiv, original version)

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