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The spin transfer torque magnetoresistive random access memory (STT-MRAM) is the leading candidate for spin-based memories. Nevertheless, the high write energy and read disturbance of the STT-MRAM motivated researchers to find other solutions. The spin Hall effect (SHE)-based MRAM is an alternative for the STT-MRAM, which also provides nonvolatility, zero leakage, and competitive area per bit, but...
The details of switching behavior of spin transfer torque magnetic random access memory (STT-MRAM) are important for the scientific understandings as well as the technical reasons.
We report switching performance of perpendicularly magnetized Spin-Transfer Torque MRAM (STT-MRAM) devices with double tunnel barriers and two reference layers. We show that stacks with double tunnel barriers improve the switching efficiency (Eb/Ic0) by 2x, when compared to similar stacks with a single tunnel barrier. Switching efficiency up to 10 kBT/uA was observed in single devices. A large operating...
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