Kapfer Krauth 2014
From Werner KRAUTH
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| '''S. C. Kapfer, W. Krauth ''' | '''S. C. Kapfer, W. Krauth ''' | ||
| '''''Soft-disk melting: From liquid-hexatic coexistence to continuous transitions ''''' '''Physical Review Letters 114, 035702 (2015)''' | '''''Soft-disk melting: From liquid-hexatic coexistence to continuous transitions ''''' '''Physical Review Letters 114, 035702 (2015)''' | ||
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| - | To appear in '''Physical Review Letters (2015)''' | ||
| =Paper (Preprint)= | =Paper (Preprint)= | ||
Revision as of 16:47, 2 February 2015
S. C. Kapfer, W. Krauth Soft-disk melting: From liquid-hexatic coexistence to continuous transitions Physical Review Letters 114, 035702 (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.
