Dynamical generation of spin currents

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A spin current, a flow of electron spins in a solid, interacts with magnetization by exchanging the spin angular momentum. This interaction is responsible for spintronic functionalities; spin injection into a ferromagnet transfers the spin angular momentum, enabling switching the direction of the magnetization or driving magnetization precession. The inverse of this process, i.e., the angular momentum transfer from magnetization to carrier spins, is spin pumping; a spin current is emitted from a ferromagnet by the angular momentum transfer from precessing magnetization to carrier spins through dynamical spin-exchange coupling at a ferromagnetic/nonmagnetic interface. This dynamical spin injection offers a versatile route for generating spin currents in a wide range of materials, providing a pathway to explore spin physics in condensed matter.

Original languageEnglish
Article number043002
JournalSemiconductor Science and Technology
Volume29
Issue number4
DOIs
Publication statusPublished - 2014

Fingerprint

Angular momentum
Magnetization
Momentum transfer
magnetization
angular momentum
Magnetoelectronics
Exchange coupling
momentum transfer
Physics
injection
Electrons
exchanging
spin exchange
precession
electron spin
pumping
routes
physics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Dynamical generation of spin currents. / Ando, Kazuya.

In: Semiconductor Science and Technology, Vol. 29, No. 4, 043002, 2014.

Research output: Contribution to journalArticle

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