Lee, Ki-Seung Lee, Seo-Won Min, Byoung-Chul Lee, Kyung-Jin 2024-01-20T10:33:00Z 2024-01-20T10:33:00Z 2021-09-04 2014-02 0003-6951 https://pubs.kist.re.kr/handle/201004/127189 We theoretically investigate the threshold current for thermally activated switching of a perpendicular magnet by spin-orbit spin torque. Based on the Fokker-Planck equation, we obtain an analytic expression of the switching current, in agreement with numerical result. We find that thermal energy barrier exhibits a quasi-linear dependence on the current, resulting in an almost linear dependence of switching current on the log-scaled current pulse-width even below 10 ns. This is in stark contrast to standard spin torque switching, where thermal energy barrier has a quadratic dependence on the current and the switching current rapidly increases at short pulses. Our results will serve as a guideline to design and interpret switching experiments based on spin-orbit spin torque. (C) 2014 AIP Publishing LLC. English AMER INST PHYSICS Thermally activated switching of perpendicular magnet by spin-orbit spin torque Article 10.1063/1.4866186 1 APPLIED PHYSICS LETTERS, v.104, no.7 APPLIED PHYSICS LETTERS 104 7 scie scopus 000332038500043 2-s2.0-84897387930 Physics, Applied Physics Article MAGNETIZATION REVERSAL FLUCTUATIONS DEPENDENCE