  We demonstrate the loading of a Bose-Fermi mixture into a microfabricated
magnetic trap. In a single-chamber vacuum system, laser-cooled atoms are
transported to the surface of a substrate on which gold wires have been
microfabricated. The magnetic field minimum formed near these current-carrying
wires is used to confine up to $6\times10^4$ neutral $^{40}$K atoms. In
addition, we can simultaneously load $2 \times 10^5$ $^{87}$Rb atoms,
demonstrating the confinement of two distinct elements with such a trap. In a
sequence optimized for $^{87}$Rb alone, we observe up to $1 \times 10^7$
trapped atoms. We describe in detail the experimental apparatus, and discuss
prospects for evaporative cooling towards quantum degeneracy in both species.

Soft Condensed Matter;Statistical Mechanics