6533b7ddfe1ef96bd1274989

RESEARCH PRODUCT

Small-Angle Excess Scattering: Glassy Freezing or Local Orientational Ordering?

Walter KobKurt BinderWolfgang PaulH. Weber

subject

Condensed Matter::Soft Condensed MatterMaterials scienceStatistical Mechanics (cond-mat.stat-mech)Condensed matter physicsScatteringLiquid crystalMonte Carlo methodFOS: Physical sciencesGeneral Physics and AstronomyModel systemGlass transitionCondensed Matter - Statistical MechanicsPolymer melt

description

We present Monte Carlo simulations of a dense polymer melt which shows glass-transition-like slowing-down upon cooling, as well as a build up of nematic order. At small wave vectors q this model system shows excess scattering similar to that recently reported for light-scattering experiments on some polymeric and molecular glass-forming liquids. For our model system we can provide clear evidence that this excess scattering is due to the onset of short-range nematic order and not directly related to the glass transition.

https://doi.org/10.1103/physrevlett.78.2136