Real time investigation of double magnetic tunnel junction with a switchable assistance layer for high efficiency STT-MRAM
نویسندگان
چکیده
This work reports experimental confirmation of the working principles a double magnetic tunnel junction (DMTJ) to achieve highly efficient spin-transfer-torque (STT) switching. concept uses magnetically switchable assistance layer (ASL) acting as top perpendicular spin polarizer. The STT-induced switching dynamics were described by macrospin simulations, while and electrical properties devices investigated in experiments. reversal storage layer/ASL coupled system validated time-resolved measurements device resistance during write operation, confirming that is subjected additive STT contributions both from reference ASL throughout its parallel-to-antiparallel antiparallel-to-parallel transitions. efficiency ASL-DMTJ was compared single MTJ stacks comprising same no layer. figure merit ∆/Ic (stability/critical current) found nearly 80 100 nm diameter, with smaller 30% increase obtained for 50 diameter cells.
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ژورنال
عنوان ژورنال: APL Materials
سال: 2022
ISSN: ['2166-532X']
DOI: https://doi.org/10.1063/5.0080335