Spin injection and spin transport in hybrid nanostructures

S. Takahashi, H. Imamura, Sadamichi Maekawa

Research output: Chapter in Book/Report/Conference proceedingChapter


This chapter describes the basics of spin injection and spin transport in magnetic nanohybrid structures. Particular emphasis is placed on the nonlocal spin transport in a spin injection and detection device of F1/N/F2 structure, where F1 is a spin injector, N is a nonmagnetic metal or semiconductor, and F2 is a spin detector. The spin-dependent transport equations for the electrochemical potentials of up and down spins are solved, and the efficient spin injection, spin accumulation, spin current, spin transfer, and spin detection are examined in the structure of arbitrary junction resistance, its source ranging from a metallic contact to a tunneling regime. It is demonstrated that discussion concerning the nonlocal spin-injection devices provide opportunities to relate novel phenomena, such as pure spin-current injection and manipulation, spin injection into superconductors or semiconductors, and spin Hall effect in nanohybrid stuctures.

Original languageEnglish
Title of host publicationConcepts in Spin Electronics
PublisherOxford University Press
Number of pages34
ISBN (Electronic)9780191718212
ISBN (Print)9780198568216
Publication statusPublished - 2007 Sep 1


  • Nonlocal spin manipulation
  • Side jump
  • Skew scattering
  • Spin accumulation
  • Spin current
  • Spin diffusion length
  • Spin hall effect
  • Spin-orbit interaction

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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