10:00 〜 10:15
▼ [13a-A501-1] Theoretical prediction of giant tunnel magnetoresistance in (111)-oriented magnetic tunnel junctions
キーワード:tunnel magnetoresistance effect, magnetic tunnel junction, first-principles calculation
We propose unprecedentedly high tunnel magnetoresistance (TMR) based on a new mechanism in unconventional (111)-oriented magnetic tunnel junctions (MTJs). Using the first-principles-based transport calculation, we found that the Co/MgO/Co(111) MTJ has a quite high TMR ratio driven by the interfacial resonance effect. These our findings not only advance the fundamental understanding on TMR but also give a new insight to experimentally explore wider range of MTJs for higher TMR ratios.