Electrical detection of spin-polarized states conduction in ZrTe₅

ZrTe₅, a fascinating new three-dimensional (3D) Dirac semimetal, has attracted considerable attention recently. To date, there has been none report of direct electrical spin injection or detection in Dirac semimetal. In our work, we report the electrical detection of spin-polarized states conduction by using a Py/MgO ferromagnetic tunneling contact in which ZrTe₅ nanowires. The resistance hysteresis with the amplitude up to about 0.1 Ω was observed when sweeping the magnetic field. The two resistance states were reversible by changing the electric current direction, affirming the spin-momentum locking in the ZrTe₅. Our result show a direct evidence of spin-polarized states in ZrTe₅. That could open a opportunities to develop spintronic devices base on ZrTe₅.