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- W2033089662 abstract "Detailed measurements of the electrical resistivity (ϱ, d ϱ/d T ), magnetoresistance (Δϱ/ϱ) and thermopower ( S ) have been performed on magnetron-sputtered (Co 20 A ̊ -Re 5 A ̊ ) ×16 and (Co 10 A ̊ -Re 16 A ̊ ) ×16 superlattices, from 3.7 to 300 K. Resistivity minima were observed at low temperatures due to electron localization/electron-electron interactions, in addition to a magnon resistivity term AT 2 e - Δ / kT , with Δ ∼ 60 K. The magnetoresistance is negative in the two superlattices, both for H ∥ I and H ⊥ I , but Δϱ/ϱ is one order of magnitude larger in (Co 20 A ̊ -Re 5 A ̊ ) ×16 , where strong antiferromagnetic interlayer coupling exists. In this sample we were able to separate a ‘normal’ Δϱ/ϱ contribution due to spin-orbit/band effects, displaying the usual cos 2 θ angular dependence. The temperature dependence of the anomalous part of Δϱ/ϱ, due to spin-dependent electron scattering, is also studied. The temperature dependence of the transport saturation field ( H s ) has been extracted from such data. The thermopower reveals anomalous small values when compared with pure Co and Co-Cu multilayers. The roles of impurity, magnon and s-d scattering (mediated by phonons) are critically analyzed." @default.
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- W2033089662 date "1994-10-01" @default.
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- W2033089662 title "Temperature dependence of the electrical resistivity, thermopower and magnetoresistance of Co-Re superlattices" @default.
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- W2033089662 doi "https://doi.org/10.1016/0304-8853(94)90190-2" @default.
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