Estimation of thermal stability factor and intrinsic switching current from switching distributions in spin-transfer-torque devices with out-of-plane magnetic anisotropy

Autor: R. Heindl, A. Chaudhry, S. E. Russek
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: AIP Advances, Vol 8, Iss 1, Pp 015011-015011-6 (2018)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/1.5002139
Popis: We performed macromagnetic simulations of switching statistics in spin-transfer-torque devices with out-of-plane magnetic anisotropy and thermal stability factors ranging from Δ = 21 to Δ = 279. We compared our results of the simulated switching probabilities in low-currents (read-disturb) and long-times (thermally activated) limits with the predictions of several existing models that predict the switching probability to be proportional to (1 − I/Ic0)n (Eq. 3), with exponent n varying from n = 1 to n = 2.2. We found that the best match to the simulated data in these two limits is obtained with values of n ≈ 1.76, when currents are limited to ∼ 0.6-0.8 Ic0.
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