The vertical longitudinal magnetoresistance in a van der Waals thin film of WTe2.

We report the magneto-transport measurements of thin film devices of the topological Weyl semimetal WTe₂ with the applied current along and vertical to the in-plane directions. The device is composed of a van der Waals thin film of WTe₂ sandwiched between top and bottom Au electrodes. At low temperatures, we observe not only a large unsaturated magnetoresistance and Shubnikov–de Haas oscillations with current in the in-plane direction but also a saturated vertical longitudinal magnetoresistance and quantum oscillations with current in the out-of-plane direction in a thin film of WTe₂. Our work provides insight into the origin of the unsaturated magnetoresistance in WTe₂ and may inspire non-planar engineering to reach higher integration in spintronics. [ABSTRACT FROM AUTHOR]