Angle dependence of the magnetoresistance of CCP-CPP-GMR system

Abstract

Angle dependence of the magnetoresistance (MR) effect due to a magnetic domain wall confined in a current-confined-path current-perpendicular-to-plane giant magnetoresistance system was studied by solving the Boltzmann equation. We calculate the scattering rates by using the nonperturbative wave function of the conduction electrons, which enables us to invesigate the MR ratio of a sufficiently thin domain wall. We find that the dependence of the MR ratio on the rotation angle of the domain wall φ is approximately described by cos φ, which has a good agreement with the recent experimental results. © Published under licence by IOP Publishing Ltd.