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 language | English |
|---|---|
| Title of host publication | Spin Current |
| Publisher | Oxford University Press |
| Pages | 15-22 |
| Number of pages | 8 |
| ISBN (Print) | 9780198787075 |
| DOIs | |
| Publication status | Published - 2017 Dec 21 |
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Keywords
- Charge currents
- Electrochemical potential
- Pure spin currents
- Spin accumulation
- Spin diffucion equation
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Incoherent spin current. / Ando, Kazuya; Saitoh, E.
Spin Current. Oxford University Press, 2017. p. 15-22.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Incoherent spin current
AU - Ando, Kazuya
AU - Saitoh, E.
PY - 2017/12/21
Y1 - 2017/12/21
N2 - 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.
AB - 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.
KW - Charge currents
KW - Electrochemical potential
KW - Pure spin currents
KW - Spin accumulation
KW - Spin diffucion equation
UR - http://www.scopus.com/inward/record.url?scp=85052958458&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052958458&partnerID=8YFLogxK
U2 - 10.1093/oso/9780198787075.003.0002
DO - 10.1093/oso/9780198787075.003.0002
M3 - Chapter
AN - SCOPUS:85052958458
SN - 9780198787075
SP - 15
EP - 22
BT - Spin Current
PB - Oxford University Press
ER -