Crucial role of interfacial alloying on spin-transfer torque in magnetic tunnel junctions

Article

关键词: VOLTAGE-DEPENDENCE;    ROOM-TEMPERATURE;    MAGNETORESISTANCE;    CONDUCTANCE;    DRIVEN;   

DOI  :  10.1103/PhysRevB.85.104413

来源: SCIE

【 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.

【 授权许可】

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