RT Journal Article SR Electronic T1 High-frequency magnetoacoustic resonance through strain-spin coupling in perpendicular magnetic multilayers JF Science Advances JO Sci Adv FD American Association for the Advancement of Science SP eabb4607 DO 10.1126/sciadv.abb4607 VO 6 IS 38 A1 Zhang, De-Lin A1 Zhu, Jie A1 Qu, Tao A1 Lattery, Dustin M. A1 Victora, R. H. A1 Wang, Xiaojia A1 Wang, Jian-Ping YR 2020 UL http://advances.sciencemag.org/content/6/38/eabb4607.abstract AB It is desirable to experimentally demonstrate an extremely high resonant frequency, assisted by strain-spin coupling, in technologically important perpendicular magnetic materials for device applications. Here, we directly observe the coupling of magnons and phonons in both time and frequency domains upon femtosecond laser excitation. This strain-spin coupling leads to a magnetoacoustic resonance in perpendicular magnetic [Co/Pd]n multilayers, reaching frequencies in the extremely high frequency (EHF) band, e.g., 60 GHz. We propose a theoretical model to explain the physical mechanism underlying the strain-spin interaction. Our model explains the amplitude increase of the magnetoacoustic resonance state with time and quantitatively predicts the composition of the combined strain-spin state near the resonance. We also detail its precise dependence on the magnetostriction. The results of this work offer a potential pathway to manipulating both the magnitude and timing of EHF and strongly coupled magnon-phonon excitations.