Magnetization switching due to nonlocal spin injection

T. Kimura, Y. Otani

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This chapter discusses and presents a schematic illustration of nonlocal spin injection. In this case, the spin-polarized electrons are injected from the ferromagnet and are extracted from the left-hand side of the nonmagnet. This results in the accumulation of nonequilibrium spins in the vicinity of the F/N junctions. Since the electrochemical potential on the left-hand side is lower than that underneath the F/N junction, the electron flows by the electric field. On the right-hand side, although there is no electric field, the diffusion process from the nonequilibrium into the equilibrium state induces the motion of the electrons. Since the excess up-spin electrons exist underneath the F/N junction, the up-spin electrons diffuse into the right-hand side. On the other hand, the deficiency of the down-spin electrons induces the incoming flow of the down-spin electrons opposite to the motion of the up-spin electron.

Original languageEnglish
Title of host publicationSpin Current
PublisherOxford University Press
Pages417-427
Number of pages11
ISBN (Print)9780198787075
DOIs
Publication statusPublished - Dec 21 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • Cite this

    Kimura, T., & Otani, Y. (2017). Magnetization switching due to nonlocal spin injection. In Spin Current (pp. 417-427). Oxford University Press. https://doi.org/10.1093/oso/9780198787075.003.0021