Large spin Hall magnetoresistance and its correlation to the spin-orbit torque in W/CoFeB/MgO structures.

ABSTRACT: The phenomena based on spin-orbit interaction in heavy metal/ferromagnet/oxide structures have been investigated extensively due to their applicability to the manipulation of the magnetization direction via the in-plane current. This implies the existence of an inverse effect, in which the conductivity in such structures should depend on the magnetization orientation. In this work, we report a systematic study of the magnetoresistance (MR) of W/CoFeB/MgO structures and its correlation with the current-induced torque to the magnetization. We observe that the MR is independent of the angle between the magnetization and current direction but is determined by the relative magnetization orientation with respect to the spin direction accumulated by the spin Hall effect, for which the symmetry is

SUBMITTER: Cho S 

PROVIDER: S-EPMC4589767 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature