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- W4294564154 abstract "A new genre of Spin-Transfer Torque (STT) MRAM is proposed, in which bi-directional writing is achieved using thermoelectrically controlled magnonic current as an alternative to conventional electric current. The device uses a magnetic tunnel junction (MTJ), which is adjacent to a non-magnetic metallic and a ferrite film. This film stack is heated or cooled by a Peltier element which creates a bi-directional magnonic pulse in the ferrite film. Conversion of magnons to spin current occurs at the ferrite-metal interface, and the resulting spin-transfer torque is used to achieve sub-nanosecond precessional switching of the ferromagnetic free layer in the MTJ. Compared to electric current driven STT-MRAM with perpendicular magnetic anisotropy (PMA), thermoelectric STT-MRAM reduces the overall magnetization switching energy by more than 40% for nano-second switching, combined with a write error rate (WER) of less than 10-9 and a lifetime of 10 years or higher. The combination of higher thermal activation energy, sub-nanosecond read/write speed, improved tunneling magneto-resistance (TMR) and tunnel barrier reliability make thermoelectric STT-MRAM a promising choice for future non-volatile memory applications." @default.
- W4294564154 created "2022-09-04" @default.
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- W4294564154 date "2011-08-11" @default.
- W4294564154 modified "2023-10-14" @default.
- W4294564154 title "Thermoelectric Spin-Transfer Torque MRAM with Sub-Nanosecond Bi-Directional Writing using Magnonic Current" @default.
- W4294564154 doi "https://doi.org/10.48550/arxiv.1108.2386" @default.
- W4294564154 hasPublicationYear "2011" @default.
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