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

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

1996-12-24

arxiv.org/abs/cond-mat/9612217v1

Phys. Rev. Lett. 78, 2136 (1997)

Physics

Condensed Matter

Statistical Mechanics

3 Pages of Latex + 4 Figures

Scientific paper

10.1103/PhysRevLett.78.2136

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.

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