  We show that an antiferrosmectic-C phase has lower energy at high densities
than the non-magnetized Fermi gas and ferronematic phases in an ultracold gas
of fermionic atoms, or molecules, with large magnetic dipole moments. This
phase, which is analogous to meson condensation in dense nuclear matter, is a
one-dimensional periodic structure in which the fermions localize in layers
with their pseudospin direction aligned parallel to the layers, and staggered
layer by layer.
