Incoherent spin current

K. Ando, E. Saitoh

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This chapter introduces the concept of incoherent spin current. A diffusive spin current can be driven by spatial inhomogeneous spin density. Such spin flow is formulated using the spin diffusion equation with spin-dependent electrochemical potential. The chapter also proposes a solution to the problem known as the conductivity mismatch problem of spin injection into a semiconductor. A way to overcome the problem is by using a ferromagnetic semiconductor as a spin source; another is to insert a spin-dependent interface resistance at a metal-semiconductor interface.

Original languageEnglish
Title of host publicationSpin Current
PublisherOxford University Press
Pages15-22
Number of pages8
ISBN (Print)9780198787075
DOIs
Publication statusPublished - 2017 Dec 21

Keywords

  • Charge currents
  • Electrochemical potential
  • Pure spin currents
  • Spin accumulation
  • Spin diffucion equation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Incoherent spin current'. Together they form a unique fingerprint.

  • Cite this

    Ando, K., & Saitoh, E. (2017). Incoherent spin current. In Spin Current (pp. 15-22). Oxford University Press. https://doi.org/10.1093/oso/9780198787075.003.0002