title: Solid-solid transition of the size-polydisperse hard sphere system.
abstract: The solid-solid coexistence of a polydisperse hard sphere system is studied by using the Monte Carlo simulation. The results show that for large enough polydispersity the solid-solid coexistence state is more stable than the single-phase solid. The two coexisting solids have different composition distributions but the same crystal structure. Moreover, there is evidence that the solid-solid transition terminates in a critical point as in the case of the fluid-fluid transition.
authors.affiliation: Institute of Theoretical Physics, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
authors.forename: Mingcheng
authors.initials: M
authors.lastname: Yang
authors.forename: Hongru
authors.initials: H
authors.lastname: Ma