Shear viscosity of two-dimensional Yukawa systems in the liquid state |
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Authors: | Liu Bin Goree J |
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Institution: | Department of Physics and Astronomy, The University of Iowa, Iowa City, IA 52242, USA. |
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Abstract: | 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. |
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