  We study a novel type of coupling between spin and orbital degrees of freedom
which appears at triplet superconductor-ferromagnet interfaces. Using a
self-consistent spatially-dependent mean-field theory, we show that increasing
the angle between the ferromagnetic moment and the triplet vector order
parameter enhances or suppresses the p-wave gap close to the interface,
according as the gap antinodes are parallel or perpendicular to the boundary,
respectively. The associated change in condensation energy establishes an
orbitally-dependent preferred orientation for the magnetization. When both gap
components are present, as in a chiral superconductor, we observe a first-order
transition between different moment orientations as a function of the exchange
field strength.
