Equilibrium Glassy Phase in a Polydisperse Hard-Sphere System

by: Pinaki Chaudhuri, Smarajit Karmakar, Chandan Dasgupta, HR Krishnamurthy, AK Sood

Physical Review Letters, Vol. 95, No. 24. (2005)

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Abstract

The phase diagram of a polydisperse hard-sphere system is examined by numerical minimization of a discretized form of the Ramakrishnan-Yussouff free-energy functional. Crystalline and glassy local minima of the free energy are located and the phase diagram in the density-polydispersity plane is mapped out by comparing the free energies of different local minima. The crystalline phase disappears and the glass becomes the equilibrium phase beyond a "terminal" value of the polydispersity. A crystal-to-glass transition is also observed as the density is increased at high polydispersity. The phase diagram obtained in our study is qualitatively similar to that of hard spheres in a quenched random potential.

@article{citeulike:2759089, abstract = {The phase diagram of a polydisperse hard-sphere system is examined by numerical minimization of a discretized form of the Ramakrishnan-Yussouff free-energy functional. Crystalline and glassy local minima of the free energy are located and the phase diagram in the density-polydispersity plane is mapped out by comparing the free energies of different local minima. The crystalline phase disappears and the glass becomes the equilibrium phase beyond a \"terminal\" value of the polydispersity. A crystal-to-glass transition is also observed as the density is increased at high polydispersity. The phase diagram obtained in our study is qualitatively similar to that of hard spheres in a quenched random potential.}, author = {Chaudhuri, Pinaki and Karmakar, Smarajit and Dasgupta, Chandan and Krishnamurthy, H. R. and Sood, A. K. }, citeulike-article-id = {2759089}, doi = {10.1103/PhysRevLett.95.248301}, journal = {Physical Review Letters}, keywords = {colloidal, glass, polydisperse}, number = {24}, posted-at = {2008-05-05 21:07:08}, priority = {2}, publisher = {APS}, title = {Equilibrium Glassy Phase in a Polydisperse Hard-Sphere System}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000095000024248301000001\&idtype=cvips\&gifs=yes}, volume = {95}, year = {2005} }

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TY - JOUR ID - citeulike:2759089 L3 - citeulike-article-id:2759089 TI - Equilibrium Glassy Phase in a Polydisperse Hard-Sphere System JF - Physical Review Letters VL - 95 IS - 24 PB - APS N2 - The phase diagram of a polydisperse hard-sphere system is examined by numerical minimization of a discretized form of the Ramakrishnan-Yussouff free-energy functional. Crystalline and glassy local minima of the free energy are located and the phase diagram in the density-polydispersity plane is mapped out by comparing the free energies of different local minima. The crystalline phase disappears and the glass becomes the equilibrium phase beyond a "terminal" value of the polydispersity. A crystal-to-glass transition is also observed as the density is increased at high polydispersity. The phase diagram obtained in our study is qualitatively similar to that of hard spheres in a quenched random potential. KW - colloidal KW - glass KW - polydisperse AU - Chaudhuri, Pinaki AU - Karmakar, Smarajit AU - Dasgupta, Chandan AU - Krishnamurthy, HR AU - Sood, AK PY - 2005/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000095000024248301000001&idtype=cvips&gifs=yes ER -

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