Ti-doped zigzag blue phosphorene nanoribbons for perfect spin filtering, giant magnetoresistance and rectification behavior

In this study, we employed density functional theory (DFT) and the nonequilibrium Green's function (NEGF) framework to examine the quantum transport properties of Ti-doped zigzag blue phosphorene (ZblueP) nanoribbons at various doping levels. Our objective was to investigate the structural stability, electronic, and transport characteristics of our models. Interestingly, we discovered that doping engineering techniques can effectively convert a monolayer (ML) of ZblueP doped with Ti into a spintronic nanodevice possessing a handful of unique transport attributes using the generalized gradient approximation (GGA) treatment. First off, our models demonstrated an high dual spin-filtering efficiencies (SFEs) at low bias. Secondly, we observed a giant magnetoresistance (GMR) of up to 1.81 x 10 5 . Lastly, we noticed a spin rectifier with a substantial rectification ratio (RR) of 1.32 x 10 7 . Our research points to a promising pathway for the advancement of high-performance ML ZblueP spintronics technology through Ti doping. Our findings suggest that the considered model holds significant potential for use in nanoscale spintronic devices.