Shear viscosity of two-dimensional Yukawa systems in the liquid state.
The shear viscosity of a two-dimensional (2D) liquid was calculated using molecular dynamics simulations with a Yukawa potential. The viscosity has a minimum at a Coulomb coupling parameter Gamma of about 17, arising from the temperature dependence of the kinetic and potential contributions. Previous calculations of 2D viscosity were less extensive as well as for a different potential. The stress autocorrelation function was found to decay rapidly, contrary to earlier work. These results are useful for 2D condensed matter systems and are compared to a dusty plasma experiment.
Liu
Bin
B
Department of Physics and Astronomy, The University of Iowa, Iowa City, IA 52242, USA.
Goree
J
J