Magneto-Optical Properties of Hybrid Magnetic Material Semiconductor Nanostructures

摘要

First-principles calculations were performed of a variety of materials systems of potential interest in spintronics. A comprehensive study was made of transitional metal doping in SiC and their magnetic properties. The trends in magnetic properties and in the preference for rocksalt versus zincblende structure were studied for the entire series of transition metal nitrides. The LSDA+U method was implemented in the FP-LMTO approach and applied to rare-earth nitrides and related compounds. A study was made of half- metallicity in zincblende transition metal compounds. A study was made of Mn doping of ScN. It was found to be a potentially interesting dilute magnetic semiconductor system. Exchange interactions in this system were calculated using a linear response approach and cluster variation method calculations indicate a Tc above room temperature should be feasible in this material. Calculations of the optical spectra of antifeorromagnetic MnN were compared with experimental data.