Out-of-plane spin-to-charge conversion at low temperatures in graphene/MoTe2 heterostructures

Multi-directional spin-to-charge conversion—in which spin polarizations with different orientations can be converted into a charge current in the same direction—has been demonstrated low-symmetry materials and interfaces. This is possible because, these systems, conversion occur unconventional configurations current, polarization do not need to mutually orthogonal. Here, we explore, low temperature regime, heterostructures of graphene 1T' phase MoTe2. First, observe emergence for out-of-plane spins at temperatures below 100 K. component allowed by symmetries both MoTe2 likely arises from Hall effect spin–orbit proximitized graphene. Moreover, examine low-temperature evolution non-local voltage signals arising two in-plane polarizations, have previously observed higher temperature. As result, report omni-directional conversion—for all orientations—in graphene/MoTe2 temperatures.