Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 30, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-648X/aaab31
Keywords
2D melting; hexatic phase; hard spheres; colloids
Categories
Funding
- EPSRC [279541-IMCOLMAT]
- European Research Council (ERC) [279541-IMCOLMAT]
- Engineering and Physical Sciences Research Council [1114117] Funding Source: researchfish
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Recently, the full phase behaviour of 2D colloidal hard spheres was experimentally established, and found to involve a first order liquid to hexatic transition and a continuous hexatic to crystal transition (Thorneywork et al 2017 Phys. Rev. Lett. 118 158001). Here, we expand upon this work by considering the behaviour of the bond-orientational correlation time and Frank's constant in the region of these phase transitions. We also consider the excess entropy, as calculated from the radial distribution functions, for a wide range of area fractions covering the liquid, hexatic and crystal phases. In all cases, the behaviour of these quantities further corroborates the previously reported melting scenario of 2D colloidal hard spheres.
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