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Spin-orbit torques and magnetization switching in perpendicularly magnetized epitaxial Pd/Co2FeAl/MgO structures

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arxiv 1906.11917 v1 pith:S6VPTUYH submitted 2019-06-27 cond-mat.mes-hall

Spin-orbit torques and magnetization switching in perpendicularly magnetized epitaxial Pd/Co2FeAl/MgO structures

classification cond-mat.mes-hall
keywords co2fealefficientepitaxialheterostructuresmagnetizedorbitperpendicularlyrequired
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We demonstrate efficient current induced spin orbit torque switching in perpendicularly magnetized epitaxial MgO(001)//Pd/Co2FeAl/MgO heterostructures grown by magnetron sputtering. The advantage of such heterostructures for spin orbit torque MRAM devices is that they allow a unique combination of critical ingredients: i) low resistivity required for reduced electric energy consumption during writing, ii) high TMR ratio required for efficient reading and iii) strong perpendicular magnetic anisotropy for increased thermal stability.

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