Spin and Charge Conversion in 2D Quantum Materials

Spintronics aims to use the spin degrees of freedom for future information technologies. A key challenge for spintronics is the efficient generation of spin currents from charge currents. Recently, emergent 2D quantum materials are very attractive for spintronics since they provide new mechanisms of spin currents generation. In this talk, I will present the spin and charge conversion in three quantum materials. The first part of my talk will discuss the facet-dependent spin Hall effect and spin orbit torque in single crystalline antiferromagnetic IrMn3, This result suggests a novel mechanism of the spin current generation arising from the triangular spin configurations in the single crystalline IrMn3. The second part of my talk will discuss the spin to charge conversion in the spin-momentum locked surface states of the topological Kondo insulator (SmB6), of which pure surface states exist at low temperatures. At the end, I will present on the gate tunable charge to spin conversion at room temperature using the Rashba-split 2DEG at the complex oxides (SrTiO3 and LaAlO3) interface.