Spin Control and Multifunctional Photocurrent Switch in Chiral Hybrid Organic-Inorganic Perovskites

Chiral-induced spin selectivity effect provides a newstrategyfor manipulating electron spin, which has potential applications invarious spin-related fields. Here, the spin-selective electronic transportand photocurrent response of (R,S-MBA)(2)PbI4 are investigated systematicallyby first-principles calculations. The minimum periodic chiral hybridsystem has stable spin filtering ability. Different from achiral magnetictunnel junctions (MTJs), the resistance of chiral MTJs depends onthe chirality of (R,S-MBA)(2)PbI4 and magnetization arrangement of ferromagnetic electrodes.Additionally, the photon energy and magnetization arrangement of electrodescan be used to switch the spin channel and photocurrent direction.At a photon energy of 3.0 eV, chiral MTJs can transfer from separatingspin into outputting highly spin-polarized photocurrent by changingthe magnetization arrangement of electrodes. Chiral spin control andmultifunctional photocurrent switch of Fe/(R,S-MBA)(2)PbI4/Fe MTJs provide importantinformation for the design of chiral spintronic and nanoscale electronicdevices.