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Ultrafast unidirectional spin Hall magnetoresistance driven by terahertz light field
fundamental spintronic phenomena, including the inverse spin-Hall effect (ISHE)4, spin- transfer torque5–7 and spin-Seebeck-related effects8–10 remain active and efficient even in the ultrafast regime. Furthermore [...] electron spin-flip time in HMs is less than 30 fs54,55, which is shorter than the THz half-cycle time of 1.7 ps at a frequency of 0.3 THz. Accordingly, one expects a similar USMRcontribution to the total resistance [...] of ultrafast spin transfer torque driving non-uniform spin dynamics. Nat. Commun. 8, 15007 (2017).
7. Ritzmann, U., Baláž, P., Maldonado, P., Carva, K. & Oppeneer, P. M. High-frequency magnon excitation …