We show that nanomechanical vibrations in a magnetic shuttle device can be strongly affected by external microwave irradiation through photo-assisted electronic spin-flip transitions. Mechanical consequences of these spin flips are due to a spin-dependent magnetic force, which may lead to a nanomechanical instability in the device. We derive a criterion for the instability to occur and analyze different regimes of nanomechanical oscillations. Possible experimental realizations of the spin-mediated photomechanical instability and detection of the device backaction are discussed.
Parafilo, A. V., Kulinich, S. I., Gorelik, L. Y., Kiselev, M. N., Shekhter, R. I., & Jonson, M. (2016). Spin-mediated photomechanical coupling of a nanoelectromechanical shuttle. Physical Review Letters, 117(5), . https://doi.org/10.1103/PhysRevLett.117.057202