  Kinetic-scale current sheets observed in the solar wind are frequently
approximately force-free despite the fact that their plasma $\beta$ is of the
order of one. In-situ measurements have recently shown that plasma density and
temperature often vary across the current sheets, while the plasma pressure is
approximately uniform. In many cases these density and temperature variations
are asymmetric with respect to the center of the current sheet. To model these
observations theoretically we develop in this paper equilibria of kinetic-scale
force-free current sheets that have plasma density and temperature gradients.
The models can also be useful for analysis of stability and dissipation of the
current sheets in the solar wind.
