First Principle Noncollinear Transport Calculation and Interfacial Spin-flipping of Cu/Co Multilayers

Abstract

In this paper the first principle noncollinear transport calculation for Cu/Co(111) including interfacial spin-flipping was performed. We modeled spin-flipping at the interface by assuming a noncollinear magnetic structure with random magnetization orientation which satisfied Gaussian distribution along average magnetization direction. The relationship between spin-dependent conductance including interfacial spin-flipping and random magnetization orientation distribution width was obtained. For certain distribution width, our defined spin-flipping ratio coincides with the range of experimental spin-flipping probability $P=1-e^{-\delta }$, where $\delta =0.25\pm 0.1$. The magnetoresistance in Co/Cu/Co spin valve system including interfacial spin-flipping has also been calculated.

5 pages, 4 figures, accepted for publication in Modern Physics Letters B

References in corpus (4)

• Spin-Diffusion Lengths in Metals and Alloys, and Spin-Flipping at Metal/Metal Interfaces: an Experimentalist's Critical Review
• Odd triplet superconductivity in superconductor/ferromagnet multilayered structures
• Interface resistance of disordered magnetic multilayers
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• First-principles calculations of spin-triplet andreev reflection spectra at half-metallic ferromagnet/superconductor interface
• First-principles calculations of current-induced spin-transfer torques in magnetic domain walls