2013

Anomalous Hall effect and magnetoresistance behavior in Co/PdAg multilayers

Anomalous Hall effect and magnetoresistance behavior in Co/PdAg multilayers
Z.B. Guo, W.B. Mi, A. Manchon, J.Q. Li, B. Zhang, P.G. Barba, and X.X. Zhang
Applied Phys. Letters 102, 062413 (2013)​​​
Z.B. Guo, W.B. Mi, A. Manchon, J.Q. Li, B. Zhang, P.G. Barba, X.X. Zhang
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2013
​In this paper, we report anomalous Hall effect (AHE) correlated with the magnetoresistance behavior in [Co/Pd1−xAgx]n multilayers. For the multilayers with n = 6, the increase in Ag content from x = 0 to 0.52 induces the change in AHE sign from negative surface scattering-dominated AHE to positive interface scattering-dominated AHE, which is accompanied with the transition from anisotropy magnetoresistance (AMR) dominated transport to giant magnetoresistance (GMR) dominated transport. For n = 80, scaling analysis with Rs∝ργxx yields γ ∼ 3.44 for x = 0.52 which presents GMR-type transport, in contrast to γ ∼ 5.7 for x = 0 which presents AMR-type transport.​​​