作者： E. Y. Tsymbal , D. G. Pettifor , I. I. Oleinik
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摘要: First-principles density-functional calculations of the atomic and electronic structure Co/SrTiO 3 /Co (001) magnetic tunnel junctions (MTJ's) are performed. Different interface terminations considered moststable with TiO 2 termination is identified based on energetics adhesion. The calculated -terminated MTJ shows an exchange coupling between Co Ti atoms mediated by oxygen. This induces a moment 0.25μ B atom, which aligned antiparallel to layer We argue that this might cause inversion spin polarization tunneling across SrTiO barrier was found in recent experiments.