title: Magnetic oscillations driven by the spin Hall effect in 3-terminal magnetic tunnel junction devices.
abstract: We show that a direct current in a tantalum microstrip can induce steady-state magnetic oscillations in an adjacent nanomagnet through spin torque from the spin Hall effect (SHE). The oscillations are detected electrically via a magnetic tunnel junction (MTJ) contacting the nanomagnet. The oscillation frequency can be controlled using the MTJ bias to tune the magnetic anisotropy. In this 3-terminal device, the SHE torque and the MTJ bias therefore provide independent controls of the oscillation amplitude and frequency, enabling new approaches for developing tunable spin torque nano-oscillators.
authors.affiliation: Cornell University, Ithaca, New York 14853, USA.
authors.forename: Luqiao
authors.initials: L
authors.lastname: Liu
authors.forename: Chi-Feng
authors.initials: CF
authors.lastname: Pai
authors.forename: D C
authors.initials: DC
authors.lastname: Ralph
authors.forename: R A
authors.initials: RA
authors.lastname: Buhrman