  In the presence of axion dark matter, fermion spins experience an "axion
wind" torque and an "axioelectric" force. We investigate new experimental
probes of these effects and find that magnetized analogs of multilayer
dielectric haloscopes can explore orders of magnitude of new parameter space
for the axion-electron coupling. We also revisit the calculation of axion
absorption into in-medium excitations, showing that axioelectric absorption is
screened in spin-polarized targets, and axion wind absorption can be
characterized in terms of a magnetic energy loss function. Finally, our
detailed theoretical treatment allows us to critically examine recent claims in
the literature. We find that axioelectric corrections to electronic energy
levels are smaller than previously estimated and that the purported electron
electric dipole moment due to a constant axion field is entirely spurious.
