title: Structural arrest transitions in fluids described by two Yukawa potentials.
abstract: We study a model colloidal system where particles interact via short-range attractive and long-range repulsive Yukawa potentials. Using the structure factor calculated from the mean-spherical approximation as the input, the kinetic phase diagrams as functions of the attraction depth and the volume fraction are obtained by calculating the Debye-Waller factors in the framework of the mode-coupling theory for three different heights of the repulsive barrier. The glass-glass reentrance phenomenon in the attractive colloidal case is also observed in the presence of the long-range repulsive barrier, which results in the lower and upper glass regimes. Competition between the short-range attraction and the long-range repulsion gives rise to new regimes associated with clusters such as "static cluster glass" and "dynamic cluster glass," which appear in the lower glass regime. Along the liquid-glass transition line between the liquid regime and the lower glass regime, crossover points separating different glass states are identified.
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
authors.forename: Jianlan
authors.initials: J
authors.lastname: Wu
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.forename: Wei-Ren
authors.initials: WR
authors.lastname: Chen
authors.forename: Jianshu
authors.initials: J
authors.lastname: Cao
authors.forename: Sow-Hsin
authors.initials: SH
authors.lastname: Chen