  A common path to superconducting spintronics, Majorana fermions, and
topologically-protected quantum computing relies on spin-triplet
superconductivity. While naturally occurring spin-triplet pairing is elusive
and even common spin-triplet candidates, such as Sr$_2$RuO$_4$, support
alternative explanations, proximity effects in heterostructures can overcome
these limitations. It is expected that robust spin-triplet superconductivity in
magnetic junctions should rely on highly spin-polarized magnets or complex
magnetic multilayers. Instead, we predict that the interplay of interfacial
spin-orbit coupling and the barrier strength in simple magnetic junctions, with
only a small spin polarization and s-wave superconductors, can lead to nearly
complete spin-triplet superconducting proximity effects. This peculiar behavior
arises from an effective perfect transparency: interfacial spin-orbit coupling
counteracts the native potential barrier for states of a given spin and wave
vector. We show that the enhanced spin-triplet regime is characterized by a
huge increase in conductance magnetoanisotropy, orders of magnitude larger than
in the normal state.
