  The recent experimental realization of spin-orbit coupling for ultracold
atomic gases opens a new avenue for engineering solitons with internal spatial
structures through tuning atomic band dispersions. However, the types of the
resulting stripe solitons in a spin-1/2 Bose-Einstein condensate (BEC) have
been limited to dark-dark or bright-bright with the same density profiles for
different spins. Here we propose that general types of stripe solitons,
including magnetic stripe (e.g., dark-bright) and localized stripe waves
(neither bright nor dark), could be realized in a spin-1 BEC with widely
tunable band dispersions through modulating the coupling between three spin
states and the linear momentum of atoms. \ Surprisingly, a moving magnetic
stripe soliton can possess both negative and positive effective masses at
different velocities, leading to a zero mass soliton at certain velocity. Our
work showcases the great potential of realizing novel types of solitons through
band dispersion engineering, which may provide a new approach for exploring
soliton physics in many physical branches.
