  We investigate properties of holographic strange metals in $p+2$-dimensions,
generalizing the analysis performed in arXiv:0912.1061. The bulk spacetime is
$p+2$-dimensional Lifshitz black hole, while the role of charge carriers is
played by probe D-branes. We mainly focus on massless charge carriers, where
most of the results can be obtained analytically. We obtain exact results for
the free energy and calculate the entropy density, the heat capacity as well as
the speed of sound at low temperature. We obtain the DC conductivity and DC
Hall conductivity and find that the DC conductivity takes a universal form in
the large density limit, while the Hall conductivity is also universal in all
dimensions. We also study the resistivity in different limits and clarify the
condition for the linear dependence on the temperature, which is a key feature
of strange metals. We show that our results for the DC conductivity are
consistent with those obtained via Kubo formula and we obtain the charge
diffusion constant analytically. The corresponding properties of massive charge
carriers are also discussed in brief.
