摘要： We demonstrate that interfacial disorder in magnetic tunnel junctions (MTJs) has a dramatic effect on the bias behavior of both spin-transfer and field-like spin torques, leading to strong enhancement, sign reversal, and bias asymmetry. The underlying mechanism lies on the impurity-induced resonance energies, which can be selectively controlled with alloying and/or bias. The predictions explain for the first time the experimental results in "dirty" junctions and have important implications on exploiting further the alloying effect to optimize the current-induced magnetization switching. 出版日期： 2012-03-22 出處： Physical review. B, Condensed matter and materials physics, 2012-03, Vol.85 (10), Article 104413 識別號： ISSN: 1098-0121 識別號： EISSN: 1550-235X 識別號： DOI: 10.1103/PhysRevB.85.104413
