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Two-dimensional melting of colloidal hard spheres

Abstract:
We study the melting of quasi-two-dimensional colloidal hard spheres by considering a tilted monolayer of particles in sedimentation-diffusion equilibrium. In particular, we measure the hard-disk equation of state from the density profiles and use time-dependent and height-resolved correlation functions to identify the liquid, hexatic and crystal phases. We find that the liquid-hexatic transition is first order and that the hexatic-crystal transition is continuous. Furthermore, we directly measure the width of the liquid-hexatic coexistence gap from the uctuations of the corresponding interface, and thereby experimentally establish the full phase behaviour of hard disks.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.118.158001

Authors


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Institution:
University of Oxford
Oxford college:
Lincoln College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author


Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
118
Issue:
15
Pages:
158001
Publication date:
2017-04-10
Acceptance date:
2017-03-10
DOI:
EISSN:
1079-7114
ISSN:
0031-9007


Pubs id:
pubs:685611
UUID:
uuid:f5b0b6f4-72da-4848-beea-869d6b0d10a0
Local pid:
pubs:685611
Source identifiers:
685611
Deposit date:
2017-03-14

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